| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.80 |
| Score | 0% | 56% |
During the water cycle, water enters the atmosphere as a gas through which process?
both evaporation and transpiration |
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transpiration |
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precipitation |
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evaporation |
The water (hydrologic) cycle describes the movement of water from Earth through the atmosphere and back to Earth. The cycle starts when water evaporates into a gas from bodies of water like rivers, lakes and oceans or transpirates from the leaves of plants.
What is a major difference between the somatic and autonomic nervous systems?
each belongs to a different nervous system |
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one is inherited, the other is learned |
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one controls voluntary activity, one controls involuntary activity |
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one controls thinking, the other controls feeling |
Both are part of the peripheral nervous system. The somatic nervous system sends sensory information to the central nervous system and controls voluntary actions while the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
Which of the following describes the Earth's outer core?
solid |
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primarily solid |
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makes up most of the Earth's volume |
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liquid |
The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).
Minerals, vitamins, and fiber are:
macronutrients |
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micronutrients |
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proteins |
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carbohydrates |
Minterals, vitamins, and fiber are micronutrients while proteins, carbohydrates, and fats are macronutrients.
The coldest point in the Earth's atmosphere is reached in which atmospheric layer?
troposphere |
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mesosphere |
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stratosphere |
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thermosphere |
In the mesosphere, temperature again drops as altitude increases until the coldest point in the Earth's atmosphere, the mesopause, is reached where temperatures fall to −225 °F (−143 °C).