| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
Which of the following states of matter exists at the highest temperature?
none of these |
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solid |
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gas |
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liquid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
In cell biology, what part of the cell contains organelles?
cell wall |
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cytoplasm |
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cell membrane |
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nucleus |
The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles.
Vector quantities are fully described by which of the following?
a direction and a polarity |
|
a magnitude only |
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a magnitude and a direction |
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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: \(\vec{v}\)
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
arthropod |
|
vertebrate |
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spiny |
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sentient |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.
Meteoroids, meteors and meteorites are categorized based on which of the following?
their location |
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their temperature |
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their size |
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their density |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.