| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
Stratus clouds are __________clouds characterized by horizontal layering with a broad flat base.
all-altitude |
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high-altitude |
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low-altitude |
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mid-altitude |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
Which of the following states of matter exists at the highest temperature?
solid |
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none of these |
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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.
A transition zone between two air masses is called:
fog |
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front |
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thunderstorm |
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boundary |
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.
In fermentation, what replaces oxygen in anaerobic respiration?
lactic acid or alcohol |
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starches |
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water |
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ascorbic acid or peptides |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
The hottest of Earth's atmospheric layers is which of the following?
stratosphere |
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thermosphere |
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mesosphere |
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troposphere |
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.