Science

Recent Questions

Science
How do humans increase the amount of greenhouse gases?

Science
A student uses a eudiometer tube to collect oxygen gas over water where the temperature is 22 ºC. What is the pressure of the oxygen gas (mm Hg) if the air pressure in the lab is 735 mm Hg?

Science
Which of the following climate regions often have four seasons? A. polar B. temperate C. dry D. cool

Science
Which of these is true about water vapor? A. It is water in a gas state. B. It is water in a solid state. C. It is water in a liquid state. D. It is not measurable.

Science
If an atomic nucleus were the size of a dime how far away might one of its electrons be? A. 1 foot B. 1 inch*** C. 1 yard D. 1 mile My answer (***)

Science
How to draw spectral curve for an analogous or triadic theme? Using adobe colour cc website Thank you

Science
if an atomic nucleus were the size of a dime how far away might one of its electrons be? A. 1 foot B. 1 inch*** C. 1 yard D. 1 mile My answer (***)

HELP Science
1)What do we mean by opponent processing? (2 marks) How are white and yellow produced by the opponent process? (3 marks) 2)Describe how light is produced in the atom (2 marks.) Why does each atom produce only specific colours? (3 marks) 3)How does the temperature of an object ...

Science
How does DNA determine a trait that determines eye color? 1)DNA codes for proteins that determine eye color. 2)DNA codes for mRSA that determines eye color. 3)DNA interacts with proteins to control eye color. 4) DNA contains pigments which make up eye color. I think # 1 Thanks

science
What are the differences between aa lava and pahoehoe lava? What are the similarities between these two types of lava?

science
What athena have, you do too You can use it but a little will do Sometimes I'm up Sometimes I'm down You put green living things in me And when I got shattered You don't really give a damn

Science
Volume of a gas at 27degree centigrade and 760mm pressure is 200cm cube then find the volume of same gas at -3degree centigrade and 760mm pressure

Science
Why do meteors start to burn in atmosphere?

Science HELP!!!!!!!!!!!!
Does an iron or a hair dryer use these energies: Electrical to heat. HELP ASAP!!!!!!!

Science HELP ASAP
when proteins are being produced by a cell, scientists say that the genes are ____? activated replicated***** turned off deactivated

Science
What kind of energy does a gasoline powered lawn mower put out? What kind of energy does a whistling tea kettle put put? (These questions are for a portfolio)

Science Help!!!
if a geologist found two fossils of different species buried next to each other in a rock layer, he or she might hypothosize that the two organismz may have been alive during the same time period? True or False. I think true because he or she mgith think this...?

Science
What kind of energy does a gasoline powered lawn mower take in? (This is for a portfolio on Connexus) Options that I have: Mechanical, Sound, and electrical.

science
is the world flat or round?

science
Electrons that have the highest energy are _____. A. nuclear electrons B. part of the nucleus C. closest to the nucleus D. valence electrons Im not going to say an answer becuse I have no clue what it is and I dont want to get accused of guessing so do you think you could help...

Science
Which element has 6 energy levels and 7 valence electrons? Astatine (At) Polonium (Po) Seaborgium (Sg) Rhenium (Re)

Science Physics
Projectile motion problem. The maximum range for a projectile is achieved when the projectile is fired at 45 degrees. This is true if the launch starts and ends at the same altitude. What about if you fire at a target at a lower elevation? Is the optimal angle still 45 degrees...

Science
In 400min,2.4grams of copper is obtained by Cu2+ solution,find how many Amphere is required for this experiment. Using the same current and time what mass of Cu2+ will be obtained from a Cu(NO3)2.

West and Worlds since 1500
Which of the following are ways that intellectual, political, social, and religious developments of the seventeenth century were related, especially in regard to the dynamics of the Scientific Revolution? Check all that apply. The English Revolution (1640–1660) saw science ...

Science HELP please!!!
when an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183C degree and the other has a boiling point of -253C degree. Has a physical or chemical change occurred? Explain?

Science Help!!!
Discuss how to separate iron fillings,salt, sand, and wood chips? Can someone explain to me Please?

Science
Clouds that form in layers—like sheets or blankets—are called _____ clouds. A.cumulus B.cumulonimbus C.stratus D.cirrus

science
The light from the Sun heats a metal surface. This is an example of A. conduction. B. radiation. C. convection. D. reflection.

science energy
A stone held above the ground has potential energy. When the stone is dropped, potential energy is converted to _________ energy. A. kinetic B. thermal C. chemical D. electrical

science
After reading the article “The Land Blew Away,” reflect back on the accounts of the people who witnessed the Dust Bowl. Write a paragraph in reaction to the survivors’ stories as well as your thoughts on what it might have been like to experience a dust storm. As you ...

science
Calculate the number of moles in 0,25grammes of sodium carbonate

Science
How does gravity work?

science
C=5/9(F-32) The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true? A temperature increase of 1 degree Fahrenheit is equivalent to a ...

Science
4. 3 elements are listed by atomic number, #19, 20, and 21. Which property do all of these elements have in common? They are all brittle. They all have 4 valence electrons. They are all malleable. ***** They shatter easily.

science
ADC convert _________________? None of the above Analog to digital Digital to analog Both, Analog to Digital and vice versa

science
If the first and second order moments of the process do not change with time then the process is weak sense stationary quasi stationary strict sense stationary non stationary

science
The transfer function of 4 points MA IIR filter is H(z)=14[1−z−41−z−1] H(z)=14[1−z−41−z−4] H(z)=14[1−z−2−z−41−z−1] H(z)=14[1−z−81−z−1]

science
The signal which is sampled at 500Hz has a power line artifact at 60 Hz. Find the location of zeros in the transfer function of the notch filter to remove the artifact at 60 Hz. 0.512+j0.66 0.512−j0.66 0.7289+j0.6845 0.7289−j0.6845

science
Synchronized averaging is more suitable for suppressing following type of noise: Shot noise White noise Gaussian noise Zero mean noise

science
The phase plot of MA filter with symmetric tap weights is linear exponential non-linear quadratic

science
The location of poles in FIR filter is at z=0 z=∞ z=1 z=−1

science
PSD of noise and desired signal is required to design Derivative-based filter Butterworth filter Wiener filter Notch filter

science
Time domain filtering is used in presence of exponential noise gamma noise additive noise multiplicative noise

Science
Where is a watershed located and why is the watershed, its tributaries, rivers and lakes, similar to a branching pattern of a tree?

Earth Science
How do increased understanding of the hydrosphere, watersheds and human uses of water support the phrase, "Water is life?'

Science Help!!!
How does the amount of substance affect the rate at which temperature changes?? Can someone help me explain please?!

Science Quiz 5 questions but on #4
Which describes the genes on each pair of chromosome? alleles can be different; genes are in the same order alleles must be the same; genes are in different order alleles can be different; genes are in different order alleles must be same; gene are in same order I think its C ...

science need help
So I have a portfolia for science and we have to make a food web and it has to be about animals native to were we live but I live in broken arrow and I just moved here so I know nothing like that and everytime I try to do the research I can never find anything so do any of you...

Physical science
Calculate the average velocity of Joe is he was able to travel 40 km south in 2 hours in his car

Science
Give some examples of artifacts that are used to determine the geological history of the Earth, as well as how its life forms have changed over time. Is the question given and I don't really know any artifacts that are used for the geological history of Earth. Can someone name...

Science
A solution in a dish contains 3.0 grams of salt dissolved in 100 grams of water. If 50 grams of the water evaporates, the solution is A compound A mixture An element A Solid

I love math science
Label all the part of speech in the sentence

Science
Is there anyone that has done the physical science b virtual momentum lab that can help me with it?

Math/Science
Reaction Time (ms) Cue Colour Green Red Bicolour (red only) 1 680 650 460 2 480 470 310 3 350 300 270 4 300 470 300 5 320 290 610 6 260 290 300 7 290 220 340 8 260 280 230 9 320 250 260 10 440 330 11 270 230 12 270 220 13 250 280 14 250 260 15 250 300 16 230 240 17 260 240 18...

Science
If I want to do an experiment to find which route to class is faster (route 1 or route 2), what would be my control group and what would be my treatment group in the experiment?

Science
Which of the following does NOT happen when vinegar and baking soda react? true or False?

Science
Electrical energy is required to decompose water into hydrogen and oxygen. True or False

science
How do the secretions from the liver and pancreas interact with each other in the small intestine?

science 6 class
Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.

Science
A frog’s intestine absorbs toxins, such as venom in insects, along with nutrient s. The liver then filters these toxins out. Why is this filtering so important?

Science
Is it possible to have very little power but use a lot of energy? How?

Science
Average heartbeat________ when a person is younger or when the activity he is doing is more vigorous. Any idea what word to use to fill in the above blank?

Science
Make a list of such actions where many forces are applied simultaneously

Science - Biology
Can someone help me out? What are the differences and similarities between flagella in prokaryotic and eukaryotic cells?

science
What is the climate zone of Minneapolis, Minnesota? (1 point) polar moist mid-latitude with severe winters moist mid-latitude with mild winters humid subtropical

science
waves of frequency 20 hz are generated along spring. the distance between successive crests and troughs is 0.45m

Science
Trees don’t eat like the sheep in the image above. Construct an explanation as to how they get the energy they need for survival. Be sure to include the organelles in the cells that contribute to these different functions. I don't under stand it and it is worth 3 extra ...

Science
What are the organs that fat bodies are adjacent to in the frog? It is a six letter word.

Science
what is the name of the structure that air passes through when going to lungs from mouth in the frog?

Science
What are the organs that fat bodies are adjacent to in the frog? It is a six letter word.

Science
1969?????/

social science
who kill to Mahatma Gahandi

Science
Why do we store silver chloride in dark coloured bottles?

science
A frog’s intestine absorbs toxins, such as venom in insects, along with nutrient s. The liver then filters these toxins out. Why is this filtering so important?

science
As you look out of your fourth floor dorm window.a flower pot suddenly falls past.The flower pot originally on a window still above passes your 2.0 m high window in 0.093s.The distance between floors in the dorm is 4.0m.From a window on which floor did the flower pot fall?

5th grade science
In the newspaper one day you read that highest tides of the season are expected in the next month. What can you infer about the positions of the sun, earth, and moon? what phase of the moon will probably be visible?

Science
Mr. Belvedere designs an experiment to test the effect of different colored light on the rate of photosynthesis. He sets up his experiment using elodea, 25watt bulbs, 30mL of distilled water, and 5g of sodium bicarbonate. Plant 1 is exposed to no light. Plant 2 is exposed to ...

science
Which gas is formed when a hydrogen bomb is detonated?

Science.... PLEASE HELP :(((
The current atomic model would be revised if _______. :(

Science
I'm having trouble with this question, can someone help? Which of the following is the BEST description of forest soil? thin humus layer, minerals deep beneath the surface thin humus layer, minerals close to the surface very little humus, rich in minerals very little humus, ...

Science
Hey can anyone help? I am having trouble with one question, and I need someone to check my answer for a different one. Which of the following is a living renewable resource? trees*** water sunlight wind This is one I am having trouble with: Which of the following is the BEST ...

Science
The height of a plant is dependent upon? 1)it's genes 2)it's environment 3)both it's genes and it's environment 4)neither it's genes nor it's environment I think #1 In humans, the allele for curly hair and the allele for straight hair show incomplete dominance. The offspring ...

Science
A gene is to a chromosome as ? 1) a pea is to a pod 2)a front is to a back 3)a bike is to a car 4)a building is to a window I think # 1 Thanks.

science
How do the secretions from the liver and pancreas interact with each other in the small intestine?

science
How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width. Please help

Science
How do people benefit from coastline?

Science
How are some ways you can compare the visible spectrum with the rest of the elctromagnetic spectrum.

Science
Describe the flow of blood in the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves through various locations in the body. Blood enters the heart through two very large veins, the inferior and superior vena cava, ...

Science
A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater atomic mass. Which element should the researcher select for the experiment? A. Nitrogen (N) B. Sulfur (S) C. Arsenic (As) D. Silicon (Si) I choose Arsenic, because it's in the ...

Science
Hello! Can someone please check my answers? Which step in the rock cycle occurs immediately before sediments are laid down? erosion breaks down rock*** lava cools heat and pressure are applied layers form From what material does an extrusive rock come from? lava*** mineral ...

science
A 1200 kg sports car accelerates from 0 to 60.0 mph (27.0 m/s) in 5.20 seconds. What is the average power developed in watts? In kilowatts?

science
Which of the following can be expected to occur as climate change continues on Earth? is it increased coastal flooding

Science
Hi, I need help with 2 questions!  Which type of underground magma formation is usually dome shaped? dike laccolith sill batholith Laccolith is my answer. Scientists want to protect a beach from erosion. What can they do? I don't know this one. I am not sure what they can do...

Science
Wind, Solar, Nuclear, Geothermal, and Water How could each source be used for a house?

Science
What are the two gases that animals exchange with their surroundings? A)oxygen and nitrogen B)nitrogen and helium C)hydrogen and carbon dioxide D)carbon dioxide and oxygen Someone please help!!!

science
which physical properties are characteristic of metal

Science
Which of the following is the safest place to be during an earthquake? under a very strong table In a basement In a large truck Under a car I have never been in an earthquake, but I have been in a tornado. I hid in a basement, but tornadoes aren't earthquakes. I think the ...

Science
When you feel your pulse, what type of blood vessel are you feeling? What characteristics allow you to feel this?

Science
What secondary benefit does a frog gain from a three-chambered heart?

Science
Can someone check my answer? The deepest parts of the ocean floor are called ____. ridges sea mounts trenches abyssal plains My answer is abyssal plains. Am I correct?

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>