| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
The hottest of Earth's atmospheric layers is which of the following?
mesosphere |
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stratosphere |
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thermosphere |
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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.
The crust and lithosphere of the Earth is made up of which of the following?
continents |
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sedimentary rock |
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metamorphic rock |
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plates |
The crust and the rigid lithosphere (upper mantle) is made up approximately thirty separate plates. These plates more very slowly on the slightly more liquid mantle (asthenosphere) beneath them. This movement has resulted in continental drift which is the gradual movement of land masses across Earth's surface. Continental drift is a very slow process, occurring over hundreds of millions of years.
The energy posessed by a thrown baseball is an example of what kind of energy?
transitional |
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kinetic |
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gravitational |
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potential |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
Which is the proper order of Earth's atmospheric layers from the surface up to space?
thermosphere, mesosphere, stratosphere, troposphere |
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stratosphere, troposphere, mesosphere, thermosphere |
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troposphere, stratosphere, mesosphere, thermosphere |
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mesosphere, thermosphere, stratosphere, troposphere |
The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.
Poor balance could indicate an issue with which part of the nervous system?
cerebellum |
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spinal cord |
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medulla |
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cerebrum |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.