| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
A transition zone between two air masses is called:
boundary |
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thunderstorm |
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front |
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fog |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
Scalar quantities are fully described by which of the following?
a magnitude and a polarity |
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a magnitude only |
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a direction only |
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a magnitude and a direction |
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: \(\vec{v}\)
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
bronchioles |
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diaphragms |
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blood cells |
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capillaries |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.
In the food chain, omnivores may be which of the following?
primary or tertiary consumers |
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secondary consumers or scavengers |
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secondary or tertiary consumers |
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primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
sentient |
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arthropod |
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spiny |
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vertebrate |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.