| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.48 |
| Score | 0% | 70% |
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?
convection |
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radiation |
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reflection |
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conduction |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
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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pushes under |
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cancels out |
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.
In the food chain, consumers are classified as which of the following?
primary |
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secondary |
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all of these |
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tertiary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.
Large, puffy, mid-altitude clouds with a flat base and a rounded top describe which of the following?
cumulus clouds |
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stratus clouds |
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cirrus clouds |
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fog |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.
Which of the following is the narrowest classification of life?
genus |
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species |
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domain |
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family |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.