| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.60 |
| Score | 0% | 72% |
An element in the physical state of __________ maintains a constant volume and shape.
solid |
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liquid |
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gas |
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gel |
An element in a solid state has atoms or molecules that are constricted and do not move freely. Solids maintain a constant volume and shape and exist at a lower temperature than liquids or gases.
Which of the following does not represent the freezing point of water?
0°F |
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0°C |
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273K |
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32°F |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
What is a major difference between the somatic and autonomic nervous systems?
one is inherited, the other is learned |
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one controls thinking, the other controls feeling |
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one controls voluntary activity, one controls involuntary activity |
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each belongs to a different nervous system |
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 these is a type of Earth's crust?
sedimentary |
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metamorphic |
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oceanic |
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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.
Leafy vegetables, beans, potatoes, fruits, and whole grains are good sources of:
saturated fat |
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protein |
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fiber |
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unsaturated fat |
Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.