| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.89 |
| Score | 0% | 78% |
When two air masses meet and neither is displaced, what kind of front is present?
warm |
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cold |
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stationary |
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occluded |
When two air masses meet and neither is displaced, a stationary front is created. Stationary fronts often cause persistent cloudy wet weather.
Which of these is important for the body's maintenance, growth, and repair?
carbohydrates |
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protein |
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fats |
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fiber |
Found in both animal sources (meat, fish, eggs, cheese) and vegetables (beans, nuts, some grains), proteins are important for the body's maintenance, growth, and repair.
In the metric system, what prefix represents 103?
milli |
|
kilo |
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mega |
|
centi |
Kilo is the metric system prefix for 103.
Vector quantities are fully described by which of the following?
a magnitude and a direction |
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a magnitude only |
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a direction and a polarity |
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a direction only |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)
A biological community of interacting organisms and their physical environment is known as:
biome |
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ecosystem |
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population |
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community |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).