| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.22 |
| Score | 0% | 64% |
In the metric system, what prefix represents 103?
kilo |
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milli |
|
centi |
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mega |
Kilo is the metric system prefix for 103.
In the food chain, omnivores may be which of the following?
secondary or tertiary consumers |
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secondary consumers or scavengers |
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primary or tertiary consumers |
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primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
The large intestine does which of the following?
breaks down fats |
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breaks down proteins |
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breaks down starches |
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processes the physical waste produced by digestion |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.
An asteroid belt holds many of the asteroids in our solar system. It is located between the orbits of which planets?
Jupiter and Saturn |
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Mars and Earth |
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Mars and Jupiter |
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Mercury and Venus |
The solar system also contains over a million rocky fragments of at least 1km in diameter called asteroids as well as millions more with smaller diameters. Many of these asteroids are an asteroid belt between the orbits of Mars and Jupiter.
The hottest of Earth's atmospheric layers is which of the following?
mesosphere |
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thermosphere |
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troposphere |
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stratosphere |
Temperatures again increase with altitude in the thermosphere which is the hottest (4,530 °F / 2,500 °C) atmospheric layer due to direct exposure to the Sun's radiation. However, the gas in this layer is highly diluted so even though the atoms of gas may be very high in temperature, there are too few of them to effectively transfer much heat.