| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following?
reflection |
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radiation |
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conduction |
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convection |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
Which of the following states of matter exists at the lowest temperature?
none of these |
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liquid |
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solid |
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gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
A subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. This desribes which of the following?
isotope |
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electron |
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neutron |
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proton |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
As a cold front moves into an area, the heavier cool air __________ the lighter warm air that it is replacing.
pushes above |
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mixes with |
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cancels out |
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pushes under |
A cold front is a warm-cold air boundary with the colder air replacing the warmer. As a cold front moves into an area, the heavier cool air pushes under the lighter warm air that it is replacing. The warm air becomes cooler as it rises and, if the rising air is humid enough, the water vapor it contains will condense into clouds and precipitation may fall.
The crust and upper mantle of the earth is called the:
atmosphere |
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lithosphere |
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geosphere |
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hydrosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).