| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.57 |
| Score | 0% | 71% |
Which is the proper order of Earth's atmospheric layers from the surface up to space?
stratosphere, troposphere, mesosphere, thermosphere |
|
troposphere, stratosphere, mesosphere, thermosphere |
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mesosphere, thermosphere, stratosphere, troposphere |
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thermosphere, mesosphere, stratosphere, troposphere |
The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.
The gravitational interaction of Earth and the Moon is responsible for which of these?
tides |
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day and night cycle |
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the northern lights |
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seasons |
Tides are caused by the gravitational interaction of Earth and the Moon.
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
spiny |
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sentient |
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vertebrate |
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arthropod |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.
Which of the following is not a terrestrial planet?
Jupiter |
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Venus |
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Earth |
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Mercury |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.
Arteries carry __________ blood at __________ pressure.
oxygenated, low |
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deoxygenated, high |
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deoxygenated, low |
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oxygenated, high |
Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.