| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.02 |
| Score | 0% | 60% |
Convert 0C° to F°.
16 |
|
0 |
|
-32 |
|
32 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(0) + 32\)
\(F° = 0 + 32 = 32\)
Meteoroids, meteors and meteorites are categorized based on which of the following?
their temperature |
|
their location |
|
their size |
|
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.
In taxonomy, domains are the broadest classification of life. How many domains are there?
6 |
|
3 |
|
5 |
|
dozens |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Veins __________ blood at __________ pressure.
deoxygenated, high |
|
oxygenated, low |
|
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.
The gravitational interaction of Earth and the Moon is responsible for which of these?
seasons |
|
day and night cycle |
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tides |
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the northern lights |
Tides are caused by the gravitational interaction of Earth and the Moon.