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October 21, 2014

Homework Help: Science

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Recent Science Questions

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Science
Koalas, which are native to Australia, primarily eat the leaves of the eucalyptus trees in which they live. Which of the following would happen to koalas if people destroy their habitats in order to build houses? a.)The koala population would increase significantly b.)The ...
Friday, January 10, 2014 at 12:55pm

Science
A commissioner wants to reduce the amount of waste sent to the landfill. Which of the following would result in the greatest reduction of waste? A. composting food waste B. recycling glass, plastics, and metals C. reusing rubber, leather, and textiles in new products D. ...
Friday, January 10, 2014 at 12:44pm

SCIENCE
Which of the following activities has a negative impact on biodiversity? a.)Regulating hunting b.)Establishing wildlife preserves c.)Buying a fuel-efficient car d.)Cutting down trees in rain forests to build more houses.
Friday, January 10, 2014 at 12:42pm

Science
Which of the following ways is the most effective to preserve biodiversity? A. captive breeding B. habitat destruction C. habitat preservation D. habitat fragmentation C?
Friday, January 10, 2014 at 12:31pm

IPC-Science
The specific heat of gold is 0.031 calories/gram°C. If 10.0 grams of gold were heated and the temperature of the sample changed by 20.0°C, how many calories of heat energy were absorbed by the sample? 6.2 calories 0.016 calories 6,451 calories 0.062 calories
Friday, January 10, 2014 at 10:02am

Science
What is the difference between photosynthesis and cellular respiration?
Friday, January 10, 2014 at 6:55am

Science
1. Which of the following can be expected to occur as climate change continues on Earth? (1 point) decreased melting of sea ice decreased migration of pests and pathogens increased freshwater sources increased coastal flooding 2. Which piece of children’s’ playground...
Friday, January 10, 2014 at 12:47am

Earth science
In a few sentences, explain how information from paleoglaciation and paleomagnetism support the idea that continental plates have moved over the past several million years.
Friday, January 10, 2014 at 12:00am

physical science
A car travels through a school zone at a speed of 36 m/s was the 45 mi/h speed limit exceeded? yes or no
Thursday, January 9, 2014 at 8:07pm

science
write T if the statement is true or F if it is false. a.)All the planets travel around the sun at the same speed.my answer is T. b.)The sun's gravity keeps the planets in orbit around it. my answer is F. c.)There is an asteroid belt between Jupiter and Saturn.my answer is ...
Thursday, January 9, 2014 at 7:52pm

history
Three laws of planetary motion developed by Johannes _______ advanced the science of _______.
Thursday, January 9, 2014 at 6:49pm

Science
What equipment is necessary for wind energy?
Thursday, January 9, 2014 at 6:36pm

Science
Hannah is comparing a rock from a riverbed and a rock from deep underground. One is very smooth, and the other has very rough edges. Explain why each rock was probably found in that location.
Thursday, January 9, 2014 at 4:16pm

Science
The mass of rock and soil directly deposited by a glacier is called • erosion. • till. • load.
Thursday, January 9, 2014 at 4:15pm

Earth Science
The Rocky Mountains are more jagged than the Appalachian Mountains. This suggests that • erosion has worn down the Appalachian Mountains more than the Rocky Mountains. • the Rocky Mountains are older. • the Appalachian Mountains are more likely to experience ...
Thursday, January 9, 2014 at 4:09pm

Science
9. How does conservation plowing help limit the destruction of soil? (1 point) • by rotating crops, removing moisture, and holding soil in place • by returning soil nutrients, retaining moisture, and holding soil in place • by rotating crops, retaining moisture...
Thursday, January 9, 2014 at 3:56pm

Science
I have a project in which I design a house that runs completely on renewable energy sources. When I put in solar energy, the batteries are said to use the sun's light and store the energy for later use. My question is if those batteries have some kind of fossil fuels in ...
Thursday, January 9, 2014 at 2:31pm

Science
How to complete SWOT analysis of a sea turtles?
Thursday, January 9, 2014 at 12:39pm

Science -- I can't find my original post...
In a closed room with an electric system controlled by a thermostat, would hanging a load of laundry to dry in that room require the system to work harder to maintain the temperature of the room?
Thursday, January 9, 2014 at 12:28pm

science
Through what processes can metamorphic rocks and igneous rock change into a sedimentary rock ? a) cooling of lava b) weathering,deposition, and erosion c) cementation and compaction d) heat and pressure
Thursday, January 9, 2014 at 7:54am

Science
What is the source of the magma that fuels the island arc complex?
Wednesday, January 8, 2014 at 11:04pm

Science help urgent :/
I need to help my brother with this, he waited till the last minute to complete his homework... 1. _________ is a solid fossil fuel that forms from plant remains. Coal Hydrocarbon Natural gas Petroleum 2. Air pollution can be controlled by permitting more storm runoff. burning...
Wednesday, January 8, 2014 at 10:45pm

Science
What are some easy facts and characteristics about a rotation?
Wednesday, January 8, 2014 at 10:14pm

Science my last question
Sorry for all the questions! What would population and community be in a home or neighborhood?
Wednesday, January 8, 2014 at 7:30pm

Science
Would a pond or garden be an abiotic factor in a neighborhood?
Wednesday, January 8, 2014 at 6:46pm

Please i needd an answer asap!!!
I give medals and 'best answer' :) I need help asap! Which of the following is one way to assess whether or not a learning game is effective? a. Being able to win the game b. doing a quiz before and after the game to see what you have learned c. Making it difficult to ...
Wednesday, January 8, 2014 at 6:33pm

SCIENCE HELP PLEASE
Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *HELP ME PLEASE*
Wednesday, January 8, 2014 at 5:59pm

Science
What would be the effect on the seasons and the northern and southern hemispheres if Earth were not tilted? Explain your answer. *PLEASE HELP ME*
Wednesday, January 8, 2014 at 5:55pm

Science Please HELP!!!
Which of the following are structures that rely on capillaries for exchange or movement of small molecules? 1 teeth, aorta, ureter 2 cartilage, epidermis, larynx 3 nephron, villi, alveoli 4 leukocytes, atrium, bronchi answer #2
Wednesday, January 8, 2014 at 5:53pm

Science Please HELP!!!
Which of the following are structures that rely on capillaries for exchange or movement of small molecules?
Wednesday, January 8, 2014 at 5:41pm

Science
Do power inverters run on energy from fossil fuels?
Wednesday, January 8, 2014 at 5:01pm

Science
What are some backup systems for solar power other than batteries?
Wednesday, January 8, 2014 at 4:47pm

EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon D? 4. A stream channel is formed when water A. carves a very deep and wide channel into rock. B. carries minerals into the ocean. C. creates a depression, which forms a lake. D...
Wednesday, January 8, 2014 at 3:10pm

SCIENCE HELP PLEASE
3. Which of the following methods of reporting research is not followed by most scientists? (Points : 1) publishing a research paper online publishing a research paper in print holding a press conference presenting a talk at a meeting Question 4. 4. Who decides whether a paper...
Wednesday, January 8, 2014 at 3:04pm

SCIENCE HELP PLEASE
3. Which of the following methods of reporting research is not followed by most scientists? (Points : 1) publishing a research paper online publishing a research paper in print holding a press conference presenting a talk at a meeting Question 4. 4. Who decides whether a paper...
Wednesday, January 8, 2014 at 2:58pm

Science check answers please and quickly
1. Jim is doing a physics experiment on the rate of cooling of solid objects in air. Which of the following is a variable that is not directly part of his experiment, but should be controlled in his experiment? (Points : 1) initial temperature to which he heats the solid ...
Wednesday, January 8, 2014 at 12:10pm

Science
Which aspect of Einstein's theory of special relativity was testable? the postulates only the postulates and the predictions the predictions only none of the aspects
Wednesday, January 8, 2014 at 11:05am

Science check my answer please
In a famous letter to Robert Hooke, Isaac Newton wrote, "If I have seen further it is only by standing on the shoulders of giants." Which of the following does this quote best demonstrate? (Points : 1) the cumulative nature of modern knowledge of physics how ...
Wednesday, January 8, 2014 at 10:48am

science
__________ rocks forms when a rock is changed by heart,pressure, or chemical reactions. a) Igneous b) Sedimentary c) Metamorphic d) Chemical
Wednesday, January 8, 2014 at 4:08am

science
Eli finds a rock with layers and smaller pieces of other rocks embedded in it.The rock is most likely a) igneous b) sedimentary c) metamorphic d) chemical
Wednesday, January 8, 2014 at 4:04am

EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon C? 2. Which of the following statements best describes chemical weathering? A. It happens only in cool environments. B. It's the type of weathering in which rocks and ...
Tuesday, January 7, 2014 at 10:41pm

Science
The terms diffusion and osmosis seem to have similar meanings. Explain how they are similar. Then give reason why scientists use two separate term.
Tuesday, January 7, 2014 at 10:17pm

Biology
Identify/ name at least 1 biological science problem and prepare a procedure on how to solve such problem then recommend solution.
Tuesday, January 7, 2014 at 9:44pm

Biology
Why is there a need for a scientist to know the limitations of Science?
Tuesday, January 7, 2014 at 9:38pm

Science
To what extend is it ethical for humans to own genetic material? Please I need help to collect peoples opinions of what they think!!
Tuesday, January 7, 2014 at 7:06pm

english 11
In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? My sister was born in Chicago. She went to boarding school in Coventry. My sister moved away in 2009. Her grades gave my sister a place in the top rank of her class. 7. Read the ...
Tuesday, January 7, 2014 at 6:32pm

english 11
In which sentence is the underlined phrase a prepositional phrase functioning as an adjective? My sister was born in Chicago. She went to boarding school in Coventry. My sister moved away in 2009. Her grades gave my sister a place in the top rank of her class. 7. Read the ...
Tuesday, January 7, 2014 at 6:30pm

physical Science
Calculate the momentum of a 200kg object moving 1m/s and a 1-kg object moving 200m/s?
Tuesday, January 7, 2014 at 5:40pm

Science
If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can support.
Tuesday, January 7, 2014 at 4:45pm

EARTH SCIENCE
1. What measurement best describes the results of a scientific experiment regarding volume? A. 1425 mL B. 5 quarts C. 2 pints D. 125 gallons A? 2. How is the mass number calculated for an element? A. The product of neutrons and protons B. There is no calculation. C. The ...
Tuesday, January 7, 2014 at 1:52pm

SCIENCE HELP PLZZZZZ! ONLY ONE QUESTION!
Which of the following correctly describes how nerve impulses move throughout the body? A. Electrical transmission through neurons and elecrical transmission between neurons. B. Chemical transmission through neutrons and chemical transmission between neutons. C. Chemical ...
Tuesday, January 7, 2014 at 1:27pm

Science check answer quick!
I really do not understand Number 7 Which of these does Newton's law of universal gravitation imply? (Points : 1) The force of gravity between two objects is inversely proportional to the product of the two masses. <-- Earth's gravity acts on people inside a space ...
Tuesday, January 7, 2014 at 12:43pm

science
Eli finds a rock with layers and smaller pieces of other rocks embedded in it.The rock is most likely a) igneous b) sedimentary c) metamorphic d) chemical
Tuesday, January 7, 2014 at 12:38pm

SCIENCE HELP! ONLY ONE QUESTION!
Which of the following correctly describes how nerve impulses move throughout the body? A. Electrical transmission through neurons and elecrical transmission between neurons. B. Chemical transmission through neutrons and chemical transmission between neutons. C. Chemical ...
Tuesday, January 7, 2014 at 12:37pm

science
To study a rock sample,geologists observe the rocks mineral,composition,color, and temperature. true or false ?
Tuesday, January 7, 2014 at 12:36pm

science
What altitude would you be at if the air pressure is 0.05 kpa.
Tuesday, January 7, 2014 at 12:25pm

please help me!! with this science!!!!!
Multiple Choice 1. Which sphere of the Earth system contains all living organisms? (1 point) atmosphere biosphere geosphere hydrosphere 2. Which of the following statements best describes the geosphere? (1 point) the sphere that consists of solid rock layers near Earth’s ...
Tuesday, January 7, 2014 at 4:52am

science
A window glass is 0.9 m wide, 1.5 m high and 4 mm thick. During winter, the temperature of the inside face of the window is 10°C, and the outside face is at -9 °C. How much thermal power is being transported through the window? (Kr = 0.84 W/m.K)
Tuesday, January 7, 2014 at 2:12am

science
how can nuclear energy be used for heating and cooling a house?
Monday, January 6, 2014 at 10:53pm

Science
Can energy from wind turbines be used for heating and cooling in a house? If so, please give a website so that I can do some research.
Monday, January 6, 2014 at 9:00pm

Science Need Help like crazy!!!
Hello.I have a question. Do sprouts germinate? Thank you for the help. PLEASE HELP:)
Monday, January 6, 2014 at 9:00pm

Science
he specific heat of gold is 0.031 cal/g°C. Fifty grams of gold will require ____ calories to raise the temperature 1°C. 3.1 6.2 1.55 50
Monday, January 6, 2014 at 7:48pm

Science
Translate into a sentence: 2NaHCO3 --> Na2CO3+H2O+CO2
Monday, January 6, 2014 at 7:43pm

Science
Translate into a sentence: 2NaHCO3 --> Na2CO3+H2O+CO2
Monday, January 6, 2014 at 7:42pm

science... PLEASE HELP!
Is Archaebacteria autotrophic or heterotrophic? Also, is it unicellular or multicellular? I believe it is both autotrophic and heterotrophic and it is multicellular, but I am not sure. Please help!
Monday, January 6, 2014 at 6:19pm

science
which of the following is a quantitative property of minerals ? a) cleavage b) hardness c) luster d) streak which of the following is not a characteristics of minerals ? a) occur in gaseous and liquid state b) formed by inorganic processes c) naturally occurring d) definite ...
Monday, January 6, 2014 at 6:05pm

Science
Does the burning of biomass give out greenhouse gases?
Monday, January 6, 2014 at 6:01pm

Science
How are are the viruses, bacteria, fungi, and protists similar? are the all living things or only visisble to through a microscope or infectious diseases??
Monday, January 6, 2014 at 4:45pm

Science 1 question....
What are the social benefits that traveling into space has for modern society?
Monday, January 6, 2014 at 12:57pm

Science
Compare renewable and nonrenewable energy sources, and discuss the effects of each on biodiversity.
Monday, January 6, 2014 at 11:55am

Science
Consider a wetland ecosystem similar to the one shown in the image below. In this ecosystem are two species: a small fish species and a wading bird species that feeds on the small fish as its main source of food. Oxygen levels are a limiting factor.Suppose that the local ...
Monday, January 6, 2014 at 11:18am

Physical science
It takes 300 N of force and a distance of 20 m for a moving cart to come to a stop. How much kinetic energy did this cartpath?
Sunday, January 5, 2014 at 11:11pm

Science
Fertilizers and pesticides applied to farm fields in Pennsylvania have made their way down into the Chesapeake Bay in Maryland. This is an example of _________________ pollution.
Sunday, January 5, 2014 at 8:49pm

Science
If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can support.
Sunday, January 5, 2014 at 8:41pm

Science
13.Which of the following statements correctly states how human activity and biodiversity affect one another? A.As humans develop land for homes and industry, biodiversity increases B.As humans restrict fishing and oil drilling, biodiversity decreases C.As biodiversity ...
Sunday, January 5, 2014 at 8:22pm

Science
3. A nonnative species of animal is introduced into a healthy ecosystem. In its new environment, this species has no predators, although it preys on several native animals in the ecosystem. Make a prediction about the biodiversity and health of this ecosystem in the future. A....
Sunday, January 5, 2014 at 8:20pm

Science
Study the animal in the image below. What can you infer about the animal from this image? ( the image is a frog that is camouflaged on a tree) A.Its skin color is a warning to potential prey B.Its skin color is the result of a disease C.Its skin color helps it find mates D.Its...
Sunday, January 5, 2014 at 8:11pm

Science
A biologist made population counts of four different species of animals in an ecosystem. What can you infer from these numbers about possible predator-prey relationships between the species? Species A:155 Species B:17 Species C:2467 Species D:19 A.Species A could be a predator...
Sunday, January 5, 2014 at 7:53pm

Science
There is a mosquito on a human. What type of relationship is that? A. Predation B. Commensalism C. Mutualism D. Parasitism
Sunday, January 5, 2014 at 7:32pm

Science
Study the image below. Future changes in the meadow area are likely to occur as the result of the process of _________________. ( the picture is lots of grass with lots of flowers)
Sunday, January 5, 2014 at 7:13pm

Science
14.If a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to ________________________. 15.When fossil fuels are burned, they produce ________________, the main greenhouse gas responsible for ...
Sunday, January 5, 2014 at 6:38pm

Science
1.Which of the following could be true of two different species that have a competitive relationship in the same ecosystem? A.One species preys on the other. B.The relationship is mutually beneficial. C.They share the same niche. D.One species benefits, while the other is ...
Sunday, January 5, 2014 at 6:20pm

science
Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION*
Sunday, January 5, 2014 at 12:41pm

Math - Algebra
Von's arcade uses 3 different colored tokens for its game machines. For 500, you can purchase any of the following combinations of tokens: 8 gold, 18 silver, and 7 bronze tokens; 8 gold, 14 silver, and 13 bronze tokens; or 16 gold, 6 silver, and 9 bronze tokens. What is ...
Saturday, January 4, 2014 at 9:26pm

Science help.
Where is most freshwater on Earth found? lakes and rivers oceans and seas underground ice caps and glaciers How does algal growth caused by agricultural waste kill marine organisms? by blocking sunlight and depleting oxygen by increasing oxygen levels in the water by ...
Saturday, January 4, 2014 at 6:24pm

Science
What natural objects can you find in and around your home? Can any object be both natural and not natural? Give example?
Saturday, January 4, 2014 at 4:28am

life science,geography,pure mathematics
What career choose would I have to take with this subjects what job is available
Friday, January 3, 2014 at 3:50pm

science
Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION*
Thursday, January 2, 2014 at 6:02pm

science
Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION* Answer this Question
Thursday, January 2, 2014 at 11:07am

science
What do scientists now think about the pace of evolutionary change?
Wednesday, January 1, 2014 at 5:29pm

science
when people remember memories after a memory loss, would you call those memories flashbacks or is there a different term? and is it possible for someone to lose memory for a specific event but remember everything after that? what is the term and are there any websites which ...
Wednesday, January 1, 2014 at 12:30pm

Science
What is the difference between a controlled experiment and a natural experiment?
Tuesday, December 31, 2013 at 1:18pm

science
Question: Fill in the blank. If two forces work in opposite directions of an object, the ________ between the two forces equal the net force. Answer Choices: A)Difference B)Similarity C)Equality
Monday, December 30, 2013 at 6:53pm

Science question.
what kind of data have astronauts be able to collect on the moon?
Monday, December 30, 2013 at 3:36pm

science/planets
Q: What two things does Earth have in common with the outer planets called gas giants? A: A)relative temperatures above freezing B)moons and magnetic field C)fairly long days and short nights D)volcanic activity and geysers
Monday, December 30, 2013 at 2:28pm

Science help.....
Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this time period not really considered a partof Earth’s ...
Monday, December 30, 2013 at 12:55pm

Science
How much heat is absorbed when 500g of water goes from 25 to 35 degrees
Sunday, December 29, 2013 at 9:24pm

8th grade science
Q: how might the length of mercury day affect the temperature ranges found on the planet? A: A)Over time the closeness of the planet to the sun has caused it to shrink. B)The entire planet would get burned by the intense amount of sunlight. C)Parts of the planets facing the ...
Sunday, December 29, 2013 at 8:37pm

Science
Why would people need to travel to the moon? what data do they collect on the moon? I am doing a space project, I choose the moon, but I don't know why I would travel there.....
Sunday, December 29, 2013 at 5:51pm

science
What are the measurable causes of weather and how does it impact our world?
Sunday, December 29, 2013 at 5:13pm

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