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April 18, 2014

Search: Science-Solar Radiation Receipt

Number of results: 54,938

Science-Solar Radiation Receipt
Why would the seasonal range (summer-Winter) in solar receipt be greater at 61 degrees North than at 40 degrees North?
Monday, February 23, 2009 at 12:31pm by Mia

Science-Solar Radiation Receipt
Hopefully, you will find something here: http://www.google.com/search?q=seasonal+range+in+solar+receipt&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
Monday, February 23, 2009 at 12:31pm by SraJMcGin

5th grade science
In order to study the effects of solar radiation on the Earth system, it is necessary to determine the amount of energy reaching the Earth's atmosphere & surface. Once the surface irradiance of the Sun is determined the amount of energy reaching the top of the Earth's ...
Wednesday, November 12, 2008 at 5:38pm by Emma Leigh

college chemistry
A green leaf has a surface area of 2.40 cm^2. If solar radiation is 1120 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
Thursday, November 12, 2009 at 6:31pm by Eddie

Science
Solar radiation is the biggest single determinate of weather patterns.
Tuesday, January 26, 2010 at 7:14pm by bobpursley

math
Hi, Nearly all of the energy used on earth comes originally from the sun, and that solar radiation is intercepted at 1370 Wm^-^2 at the top of the atomsphere, and that 49%of this radiation is absorbed by the earths surface. If a shallow dish containing ice or warte, placed on ...
Friday, December 5, 2008 at 4:14pm by carl

Physics
Solar heating takes advantage of solar collectors such as the type shown in the figure . During daylight hours, the average intensity of solar radiation at the top of the atmosphere is about 1400 W/m^2. About 50% of this radiation reaches the Earth during daylight hours. (The ...
Saturday, May 7, 2011 at 10:52pm by Alice

chemistry
Calculate the energy of a photon of electromagnetic radiation at each of the following wavelengths.503 nm(wavelength of maximum solar radiation) i need help please!
Friday, January 25, 2013 at 6:40am by savannah

EARTH SCIENCE
Some factors that might influence solar radiation on the Martian surface
Sunday, July 18, 2010 at 7:27pm by Anonymous

physics
This refers to passive solar collector, where solar radiation is used to heat water. It is therefore not on the solar cells. What characteristics should solar collectors have, to function in an optimal way? Why should these properties be fulfilled? If there is a water flow of ...
Saturday, December 4, 2010 at 2:19pm by bark

physics
This refers to passive solar collector, where solar radiation is used to heat water. It is therefore not on the solar cells. What characteristics should solar collectors have, to function in an optimal way? Why should these properties be fulfilled? If there is a water flow of ...
Tuesday, December 7, 2010 at 4:10pm by bark

physics
This refers to passive solar collector, where solar radiation is used to heat water. It is therefore not on the solar cells. What characteristics should solar collectors have, to function in an optimal way? Why should these properties be fulfilled? If there is a water flow of...
Thursday, December 9, 2010 at 3:22am by bark

Science
All objects emit _____ radiation. A.electromagnetic B.kinetic C.thermal D.solar I think it is A...?
Monday, April 8, 2013 at 12:21pm by Cassie

physics
You need to look up the solar radiation at that location. Then, look to see how many hours of radiation is supported. In june, one probably can get about 6 hours of effective radiation, but you will find tables for this. No, not 24 hours, you cant get radiation during the ...
Saturday, December 4, 2010 at 2:19pm by bobpursley

Science
how do the wavelengths of radiant energy vary with the temperature of the radiating source? How does this affect solar and terrestrial radiation?
Thursday, September 17, 2009 at 7:27pm by Jordan

Earth Science
What causes the intensity and duration of solar radiation received at any place to vary throughout the year?
Saturday, October 30, 2010 at 8:53am by Anon

Science(URGENT)
Most spacecrace use solar radiation to power batterys which run all the electronics.
Wednesday, December 15, 2010 at 9:06pm by bobpursley

Science
You have been commissioned to design a standĀ]alone solar PV system (solar panels + battery array) for a 1000ft2 occupied between May through October, offĀ]line cottage located near Corpus Cristi, Texas. The PV array should supply the daily average requirement of 7.2 kWh and ...
Wednesday, April 15, 2009 at 2:27pm by Sarah

geography
why is the difference in solar receipt between 60N and 30N greater in the winter than in the summer?
Tuesday, October 5, 2010 at 12:27am by TC

science
a material that reduces the flow of heat by conduction, convection, and radiation is a. a solar collector b. a conductor c. and insulator, or d. condensation
Wednesday, January 28, 2009 at 5:37pm by delane

Science-Weather
which statement best explain wy the greenhouse effect incrases earth's average temperature? a. CO2 has a high latent heat b. less infrared raditon escapes to outer space. c. More incoming solar radation is aborbed by the atmosphere. d. less incoming solar radiation is ...
Monday, January 12, 2009 at 5:18pm by Twilight lover

Science
What would happen to the amounts of solar radiation reflected and absorbed if a large aount of light colored dust was added to the air
Saturday, September 17, 2011 at 11:19am by Chandler

global warming science
1a (5 points possible) A schematic of a two layer model of the Earth-atmosphere energy balance is shown in the image below. The atmosphere is assumed to be transparent to solar radiation, and the total solar radiation absorbed by the surface is written in terms of the ...
Wednesday, March 26, 2014 at 6:16pm by JuanPro

chemistry
Which of the following statements about UV radiation is/are FALSE? (Select all that apply). ? a. UV B radiation covers a longer wavelength spectrum than UV A radiation. b. UV B radiation has sufficient energy to break any covalent bond. c. UV B radiation covers a frequency ...
Sunday, September 21, 2008 at 9:14pm by Jasmine

Science (weather & climate) -
I just wanted to post this question once more. I have to go offline soon. Please go over my answers. Thanks True or false: 7.Eruptions fom volcanoes decrease global temperatures. I answered false because volcanes spew out CO2 into the atmophere. The 16._________-sphere affects...
Sunday, January 11, 2009 at 7:42pm by Twilight lover

science
The atmosphere (especially clouds) scatters and absorbs solar radiation, reducing the amount that reaches the surface of the Earth by about 50%, on the average.
Wednesday, September 9, 2009 at 11:59pm by drwls

Physics
For the particle nature of light?: Hereare a few more: Stimulated emission (lasers) The long-wavelength cutoff of solar cells The Planck blackbody radiation law Electron-positron recombination (gamma) radiation K-capture radioactivity
Monday, April 14, 2008 at 10:57pm by drwls

PHYSICS
Consider a one layer atmosphere for the planet Venus. 19% of incoming solar radiation is absorbed by the atmosphere. 99% of the outgoing radiation is absorbed by the atmosphere. The incoming radiation, E, as measured by satellite is 615 Wm-2. 1) Derive two equations, one for ...
Sunday, January 24, 2010 at 12:27pm by Bubbles

Physics
You need to know the radiation pressure due to solar radiation. This varies with (1/R^2), but so does the gravity force. The solar flux at the Earth's distance from the sun is about I = 1300 W/m^2, as I recall. You'd better look it up yourself. Divide that by c for the ...
Friday, March 11, 2011 at 3:03pm by drwls

science 3 questions!!
2. A device that can be used both for cooling and heating is a _____. (1 point) heat engine compressor heat pump vaporizer 3. All objects emit _____ radiation. (1 point) electromagnetic kinetic thermal solar 4. Fast food restaurants keep food hot with infrared lamps. The heat ...
Tuesday, April 9, 2013 at 8:07pm by jessie

Biology
33. Nearly all antibiotics are made from fungi. Nitrogen fixing is made by bacteria in roots. Answer c is true. 11, the question I have been gritting my teeth over, and avoiding your post because of it. Solar energy trapped? Grrrr. Solar energy in the atmosphere is stored ...
Tuesday, February 23, 2010 at 11:27am by bobpursley

Science
Does infrared radiation or ultraviolet radiation have wavelengths that are shorter than visible light? My answer is ultraviolet radiation. I am really sure about this one. Am I correct?
Friday, September 10, 2010 at 11:44pm by Reed

Science Sorry I just need help one more time!
Ok I am doing a project in science on radiation. I have to make a brochure. I need help answering these questions about radiation. Or some good sites would be nice too. I looked on google but they didnt really help. Thank you! Where does radiation come from? When is it ...
Thursday, January 15, 2009 at 2:14pm by Amy

physics
1) A fask has the following features; a plastic stopper glass walls with silver coating on both sides vacuume between walls plasic spacer Which features of the flask reduce energy transfer by: a) radiation b) conduction c) convection 2) Many vacuume flasks have steel walls ...
Thursday, November 17, 2011 at 1:30pm by lissa

physics
Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.
Tuesday, October 4, 2011 at 12:29am by ice cream

college physics
Human skin (choose all that apply) 1. emits radiation well. 2. absorbs radiation well. 3. does not emit radiation well. 4. does not absorb radiation well. 5. has an emissivity of 0.
Tuesday, October 4, 2011 at 12:36am by ice cream

Science
You can think of comet as "dirty snowballs" that come from the outer regions of the solar system in highly eliptical orbits. Many only come once; others (like Halley's) return after many decades. As they approach the sun, some of the ice, other volatile chemicals and dust ...
Saturday, February 25, 2012 at 3:50am by drwls

PHYSICS-radiation
Four billion years ago the Sunís radiative output was 30% less than it is today. (i) If we assume the radius of the sun is the same, and that the Earthís atmosphere was the same as it is now (that is, the atmosphere absorbs 10% of the incoming solar radiation and 80% of the ...
Sunday, January 24, 2010 at 11:57pm by RANI

to ms.sue- science project part 1
Please select one of the four solar-energy-based topics listed below to research. Based on your research you are to create a poster that details what you learned. Please make a bibliography of the resources that you used for your information, to go along with your poster. ...
Thursday, June 21, 2012 at 11:19am by Celest

Biology
_____________provided significant sources of energy on early Earth, and were most likely involved in the origin of life. Options A) Volcanic activity, violent thunderstorms, and ultraviolent radiation B) Bombardment from meteorites, gamma radiation, and osmic radiation. C) ...
Wednesday, August 29, 2007 at 10:43pm by Sabrina

help Fast ( physics)
a 0.5 m^2 solar collector radiation from the sun and focuses it on 250g of water that is inially at 23 degrees . the average intensity of radiation arriving from the sun at this location is 550 Wm^-2. if you assume that this is collected with 100% efficiency. how much time is ...
Wednesday, April 27, 2011 at 12:44pm by H.T

physics
I'm fairly certain it's D i'll explain my reasons again - hope fully better :) Ok, my example is going to be UV radiation from the sun. a. it transfers energy to objects in the path of the electromagnetic waves When you are outside in the sun UV radiation is, for lack of a ...
Saturday, March 14, 2009 at 10:57am by GanonTEK

help help 9 physics) i need an aswer fast!
a 0.5 m^2 solar collector radiation from the sun and focuses it on 250g of water that is inially at 23 degrees . the average intensity of radiation arriving from the sun at this location is 550 Wm^-2. if you assume that this is collected with 100% efficiency. how much time is ...
Thursday, April 28, 2011 at 7:52am by H.T

Geography
Geothermal energy is energy that comes from the earthís inner heat. This type of energy is used in areas with volcanic activity; Iceland, Italy, Japan, and New Zealand all make use of geothermal energy. The last type of energy, solar energy, is energy produced by the sun. ...
Wednesday, August 26, 2009 at 6:04pm by mysterychicken

chemistry
Excited lithium atoms emit radiation at 670.8nm. a. calculate the frequency of this radiation. b. calculate the energy (in eV) of this radiation. c. What color is this radiation?
Saturday, January 22, 2011 at 11:38am by Maria

chemistry
Excited lithium atoms emit radiation at 670.8nm. a. calculate the frequency of this radiation. b. calculate the energy (in eV) of this radiation. c. What color is this radiation?
Saturday, January 22, 2011 at 11:39am by Maria

Science Sorry I just need help one more time!
Your "what is it" discussion is fine if you are just talking about electromagnetic radiation. When you talk about radioactivity, some kinds of particles are also called "radiation". These are alpha particles (helium nuclei), beta particles (electrons and positrons) and "free" ...
Thursday, January 15, 2009 at 2:14pm by drwls

science
infrared radiation and some visible radiation.
Tuesday, October 13, 2009 at 7:14pm by Sara

Science
Does a solar powered calculator work when there is no bright light falling on the solar panel? Explain
Thursday, March 6, 2014 at 5:05pm by Cherie

Science
Need help on this multiple choice question, thanks! Microscopic airborne particulates that reflect incoming solar radiation and thereby tend to cool the atmosphere are called: a. CFCs b. aerosols c. greenhouse gases d. indoor air pollutants e. hazardous air pollutants Thanks ...
Thursday, November 12, 2009 at 9:41pm by Bobby

Science
What are some of the effects of the sun's radiation on the earth's atmosphere including the green house effect, conduction, convection and radiation?
Wednesday, April 10, 2013 at 3:49pm by Aj

Physics
what type of heat transfer does solar hot water heating use? (conduction, convection, radiation)
Monday, March 10, 2014 at 11:54am by Lisa

Science
On this date, the solar noon radiation values at the top of the atmospheree and at the surface at this place are 1317 WM-2 and 920 WM-2. Why is the surface value lower than the value at the top of the atmosphere?
Monday, March 9, 2009 at 4:13pm by Mama Mia

PHYSICS
Four billion years ago the Sunís radiative output was 30% less than it is today. (i) If we assume the radius of the sun is the same, and that the Earthís atmosphere was the same as it is now (that is, the atmosphere absorbs 10% of the incoming solar radiation and 80% of the ...
Sunday, January 24, 2010 at 12:45pm by Sunshin3

science
solar ligth ,heat ,geothermal solar ligth electrical, solar heat geothermal,solar light heat
Saturday, November 8, 2008 at 9:27pm by steven

Astronomy
Where did CMB radiation originate? (a) It is the radiation from the electroweak phase transition when the weak force was spon- taneously broken by the Higgs mechanism. (b) It is radiation from supernovas in the early Universe that produced the heavier elements. (c) The ...
Tuesday, October 1, 2013 at 5:14pm by qwerty

science
The average solar radiation incident on the surface of the earth is about 1 KW/m2 for the entire year. A solar house is built with solar panels installed in the roof to provide the heating and electrical energy of the house. If the roof has a surface area of 100 m2 and the ...
Sunday, December 12, 2010 at 11:34am by Kim

science
The FRACTION of light reflected back to space is called the albedo. The radiation itself would just be called the reflected radiation. Be careful when using the word "light". It properly refers only to visible radiation between 400 and 700 nm in wavelength. Much (roughly 1/3) ...
Monday, November 24, 2008 at 1:17pm by drwls

to ms.sue-science project part 1
so is the project basically asking to write down details abd information i learned about solar cars and to write down the websites? please read this and describe to me: Please select one of the four solar-energy-based topics listed below to research. Based on your research you...
Thursday, June 21, 2012 at 12:07pm by Celest

Earth science
The greenhouse effect is a result of A. consumption of fruits and vegetables that produce a biofuel. B. absorption and radiation of energy in the hydrosphere. C. absorption and radiation of energy in the atmosphere. D. consumption and radiation of energy in the atmosphere. D?
Thursday, March 13, 2014 at 11:29pm by Heather

physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
Thursday, April 14, 2011 at 10:41pm by monique

physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
Friday, April 15, 2011 at 8:26am by niki

physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
Monday, April 1, 2013 at 8:08am by Ashley

Phyics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
Friday, April 12, 2013 at 7:28am by HELP PLEASE

Science
Farthest from the sun, the comet would have no tail. The tail would become prominent closer to the sun, because the solar radiation vaporizes parts of the comet. The tail always points away from the sun. I hope this helps.
Monday, February 15, 2010 at 8:53pm by PsyDAG

physics help
At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your solar ...
Sunday, March 27, 2011 at 10:30pm by sarah

physics
At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your solar ...
Sunday, March 27, 2011 at 5:55pm by sarah

Science
Scientists theorize that an increase in atmospheric carbon dioxide level might cause an increase in global temperatures. This theory is based on the fact that carbon dioxide is a. good absorber of infrared radiation b. poor absorber of infrared radiation c. good reflector of ...
Thursday, January 22, 2009 at 8:08pm by Emeralda

Science
Facts about the sun are? I have 1. the only star in our solar system 2. sun spots are cooler areas on sun's surface 3. from solar energy 4.Solar flares 5. only star you see during the day 6.made of gas 7.closest star to our earth
Thursday, November 17, 2011 at 10:18pm by Johnny

college Chemistry
Warm objects emit electromagnetic radiation in the infra-red region. Heat lamps employ this principle to generate infra-red radiation. Water absorbs infra-red radiation with wavelengths near 2.80um. Suppose this radiation is absorbed by the water and converted to heat. A 1.00 ...
Sunday, December 6, 2009 at 11:51am by Need Help

physics
Force is C - Electromagnetic The Strong force binds gluons inside protons and neutrons Yes, I think D is right for the mechanical force one. Yes 5.1 I think it's D - All of the above Here is an example a - UV radiation causes sunburn b - UV radiation is used by Solar panels ...
Saturday, March 14, 2009 at 10:57am by GanonTEK

Physical Science
What is the apparent contradiction in the statement that "solar energy is free" with the fact that solar cells are too expensive to use as an energy source.
Tuesday, May 4, 2010 at 2:19pm by Sue Ann

Science
Which compound causes the depletion of Earth's ozone layer? A. ultraviolet radiation B. chlorofluorocarbon C. carbon dioxide D. sulfuric acid B How does a nuclear power plant produce energy? A. through solar panels B. through nuclear fission reactions C. through geothermal ...
Friday, January 10, 2014 at 1:11pm by Anonymous

science
Light from an electric bulb is generated by electricity. You may infer that the solar was indirectly involved (solar panels to generate the electricity to light the bulb or that solar energy grew the plants and trees that eventually decayed, made coal, the coal was used to ...
Thursday, January 22, 2009 at 10:00pm by DrBob222

Science - Radiation
A radioactive isotope, used in the agricultural industry has a half life of 8 days. On application, the radiation is emitted is measured at 12500 counts per sec (cps). If the area that it is applied to cannot be used until the radiation strength is less than 50 cps how long ...
Saturday, January 26, 2013 at 6:29pm by Manu

Earth Space
What is the ultimate source of energy that creates Earth's weather? I said solar radiation and heat from the sun, is that correct?
Monday, October 28, 2013 at 5:59pm by Bryce

Science - 7th grade
Is radiation damaging to the health of humans? If so, in what way/ways? My answer is: Yes, radiation though helpful in treating certain diseases is damaging to the health of human beings in many ways one of which being that it mutates our DNA and is unhealthy. It can also make...
Thursday, January 16, 2014 at 9:01pm by Sara

8th grade science
radiation is produced by the Sun's UV rays. (UV means Ultra violet). They are sometimes harmless, because radiation is everywhere. But too much exposure can cause harm to you.
Thursday, March 18, 2010 at 5:46pm by blaise

Science
Itís OK to say that your brain is solar powered, because A) mitochondria in plant cells convert solar power to the chemical power that is used to run your brain. B) cellular respiration is powered by sunlight. C) the antenna complex in chloroplasts acts like a tiny solar panel...
Wednesday, October 26, 2011 at 4:22pm by Frank

Science
Itís OK to say that your brain is solar powered, because A) mitochondria in plant cells convert solar power to the chemical power that is used to run your brain. B) cellular respiration is powered by sunlight. C) the antenna complex in chloroplasts acts like a tiny solar panel...
Wednesday, October 26, 2011 at 5:59pm by Frank

geography
At noon on the summer solstice, the sun's zenith angle is 37 deg at 60 latitude and 7 deg at 30 latitude. The noon solar irradiance has a ratio cos 7/cos37 = 1.24, and the sun is up much longer at the more northern latitude. The net result is very little dfference in total ...
Tuesday, October 5, 2010 at 12:27am by drwls

college earth science and astronomy
calories absorved=masswater*1*deltaTemp = 250*2.5 calories solar flux= 250*2.5/(63.6*10) cal/cm^2*min lets see there is 100^2 cm^2 in a m^2 solar flux= 250*2.5*100^2/(63.6*10) cal/m^2 min solar output= solar flux* area*time
Wednesday, March 18, 2009 at 3:30pm by bobpursley

Science
If you're not just talking about photovoltaic (PV) solar, then solar thermal plants can store energy in molten salt. Besides that, I'm pretty sure you'd need to resort to another generator powered by fossil fuels.
Wednesday, January 8, 2014 at 4:47pm by Anonymous

Science
Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by _____. condensation conduction convection radiation I think it is radiation...?
Monday, April 8, 2013 at 12:25pm by Cassie

physics
I just found the following: I didn't find any time tables I still need help Regards Solar radiation on Earth: As the Sun's energy spreads through space its spectral characteristics do not change because space contains almost no interfering matter. However the energy flux ...
Saturday, December 4, 2010 at 2:19pm by bark

Science
Which radiation causes cancer? I think it is UV radiation, but I'm not sure. Also, A wave goes up and down 5 times in 10 seconds. what is the frequency of the wave in cycles per second (Hertz)
Monday, May 2, 2011 at 9:16pm by Erika

science
Which radiation causes cancer? I think it is UV radiation, but I'm not sure. Also, A wave goes up and down 5 times in 10 seconds. what is the frequency of the wave in cycles per second (Hertz)
Monday, May 2, 2011 at 9:56pm by Erika

Physics
Some spacecraft design uses a solar sail made of aluminized plastic. As sunlight reflects off the sail, radiation pressure drives the spacecraft outward away from the sun. a. If the sail material has a density of 700.0 kg/m3, what is the maximum thickness of the sail for which...
Friday, March 11, 2011 at 3:03pm by Daniel

science
dust is often light in color,while soot from fires is generally dark.what would happen to the amounts of solar radiation reflected and absorbed if a large amount of light-colored dust was added to the air?what if a large amount of dark soot was added?
Wednesday, August 31, 2011 at 7:49pm by bob

Science
Dust is often light in color, while soot from fires is generally dark. What would happen to the amounts of solar radiation reflected and absorbed if a large amount of light-colored dust was added to the air? What if a large amount of dark soot was added?
Thursday, September 16, 2010 at 3:58am by Bobert

help please physics
Assume you tilt the panels so that the solar radiation power hitting them per area equals the solar constant, which is about 1300 Watts per square meter. Then you need to take into account the efficiency of the solar panels in generating electrical power. Do some research of ...
Monday, February 9, 2009 at 9:37pm by drwls

Science
The radiation emitted by a star is to a good approximation thermal radiation. This then implies that the spectrum will be the Planck spectrum. The higher the temperature, the shorter the wavelength at which the emitted power will peak.
Monday, May 25, 2009 at 6:17am by Count Iblis

Earth/Space Science
How does damage to the ozone layer cause a threat to humans? A. It increases radiation of heat from Earth into space. B. It allows damaging infrared radiation to penetrate the atmosphere. C. It allows damaging ultraviolet radiation to penetrate the atmosphere. D. It increases ...
Monday, April 2, 2012 at 6:25pm by Astrid

3rd grade science
Solar System Project: I would like to know if the moon is between earth and mars. I am making a shoe box model of the solar system. I have to put the planets in order. Thats all I need to know. Thanks a bunch!!!
Monday, January 18, 2010 at 1:25pm by Miranda

science
In the process called fluorescence, some substances absorb photons of one kind of radiation (e.g) ultraviolet radiation), and give out photons of a different kind (e.g visible light). When infrared radiation falls on these materials, visible light is not emitted. Why not? If ...
Tuesday, March 6, 2007 at 6:58am by Kelvin

8th grade science
Check these explanations. http://www.kidsgeo.com/geography-for-kids/0062-radiation.php http://en.allexperts.com/q/Science-Kids-3250/2009/2/Radiation-1.htm
Thursday, March 18, 2010 at 5:46pm by Ms. Sue

Space Science
Which objects in the solar system have been least modified since the formation of the solar system? a)asteroids b)Kuiper Belt objects c)meteoroids d)terrestrial planets e)jovian moons
Monday, September 27, 2010 at 7:23pm by Alice

_____ radiation can damage genes?
If you have to pick one answer, gamma radiation is the best choice. There are some ionizing radiation types that do not cause gene damage, mainly becasue they do not normally reach the sexual organs.
Tuesday, September 15, 2009 at 8:49pm by drwls

Biology
YOu have to get specific on the "alternative " fuel sources, it is difficult to generalize, except none are competitive without government subsidies. SO discuss the pro/con of geothermal wind solar radiation photovoltaic tidal generation
Monday, March 15, 2010 at 10:05pm by bobpursley

Physics
Can someone check if this is correct or not? Listed following are events or phenomena that occur during either the part of the sunspot cycle known as solar minimum or the part known as solar maximum. Match these items to the correct part of the sunspot cycle. Solar maximum: -...
Friday, April 15, 2011 at 9:40pm by Misty

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