| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
What kind of weather front is likely to create clouds and storms?
temperate front |
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stationary front |
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warm front |
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cold front |
A warm front is the boundary between warm and cool (or cold) air when the warm air is replacing the cold air. Warm air at the surface pushes above the cool air mass creating clouds and storms.
As part of digestion, the liver produces bile which breaks down:
starches |
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protein |
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fat |
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sugars |
The liver produces bile which emulsifies (separates) fat.
Which of the following is the narrowest classification of life?
genus |
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family |
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domain |
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species |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
Acceleration is the rate of change of velocity per unit of time. Which of these is the formula for acceleration?
\(\vec{a} = { t \over \Delta \vec{v} }\) |
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\(\vec{a} = { \Delta \vec{v} \over t }\) |
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\(\vec{a} = { \vec{v} \over t }\) |
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\(\vec{a} = \Delta \vec{v} t \) |
Acceleration is the rate of change of velocity per unit of time. In physics, the delta symbol (\(\Delta\)) represents change so the formula for acceleration becomes \(\vec{a} = { \Delta \vec{v} \over t }\)
Which of the following is not a base unit in the metric system?
gram |
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meter |
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liter |
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degree Fahrenheit |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.