| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.02 |
| Score | 0% | 60% |
Which of the following is not a terrestrial planet?
Jupiter |
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Earth |
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Mercury |
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Venus |
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.
In the water cycle, infiltration is most closely related to:
runoff |
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rivers |
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oceans |
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water table |
The water then accumulates as runoff and eventually returns to bodies of water or is absorbed into the Earth (infiltration) and becomes part of the water table, an underground resevoir of fresh water.
Which of the following states of matter exists at the lowest temperature?
none of these |
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liquid |
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solid |
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gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
The hottest of Earth's atmospheric layers is which of the following?
thermosphere |
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stratosphere |
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troposphere |
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mesosphere |
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.
Which of the following is the formula for work?
\(W = {F}{d}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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\(W = {{F}\over{d}}\) |
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\(W = \vec{F}\vec{d}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)