| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
The gravitational interaction of Earth and the Moon is responsible for which of these?
seasons |
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tides |
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the northern lights |
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day and night cycle |
Tides are caused by the gravitational interaction of Earth and the Moon.
Which of the following states of matter exists at the lowest temperature?
liquid |
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solid |
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none of these |
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gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Which of these is a type of Earth's crust?
oceanic |
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metamorphic |
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sedimentary |
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terrestrial |
The crust is the Earth's outermost layer and is divided into oceanic and continental types. Oceanic crust is 3 miles (5 km) to 6 miles (10 km) thick and is composed primarily of denser rock. Continental crust is 20 to 30 miles (30 to 50 km) thick and composed primarily of less dense rock. The crust makes up approximately one percent of the Earth's total volume.
These clouds grow upward and can develop into cumulonimbus or thunderstorm clouds.
nimbus clouds |
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stratus clouds |
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cumulus clouds |
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cirrus clouds |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.
The asteroids in the Kuiper belt are composed of which of the following?
gaseous methane, ammonia, and water |
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minerals |
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frozen methane, ammonia, and water |
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rock |
The Kuiper Belt is similar to the asteroid belt but much larger. Extending beyond the orbit of Neptune, it contains objects composed mostly of frozen methane, ammonia, and water. Most notably, the Kuiper Belt is home to Pluto, a dwarf planet that, until a 2006 reclassification, was considered the ninth planet of the solar system.