| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.84 |
| Score | 0% | 57% |
Absolute zero is which of the following?
the coldest temperature possible in the universe |
|
0°C |
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the freezing point of hydrogen |
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the freezing point of oxygen |
In contrast to the Celsius scale (measured in degrees centigrade) that fixes 0° at the freezing point of water and the Fahrenheit scale that uses 32°, the Kelvin scale fixes 0 at absolute zero (-273°C) which is the lowest temperature possible in the universe.
When the clouds become too saturated with water, the water is released as precipitation in the form of:
snow or ice |
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snow |
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ice |
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rain |
Rising into the atmosphere, the water condenses into clouds. When the clouds become too saturated with water, the water is released as snow or ice precipitation which may warm as it falls to reach Earth as rain.
A large naturally occurring community of flora and fauna occupying a major habitat is:
a community |
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a population |
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a food chain |
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a biome |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
products |
|
reactants |
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fuel |
|
components |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
minerals |
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habitats |
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plants |
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animals |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).