| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
During continental drift, the drifting plates move across which of the following?
sediment |
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fault lines |
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water |
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liquid mantle |
The crust and the rigid lithosphere (upper mantle) is made up of 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.
As part of digestion, the liver produces bile which breaks down:
protein |
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starches |
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fat |
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sugars |
The liver produces bile which emulsifies (separates) fat.
The heart __________ blood.
deoxygenates |
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oxygenates |
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filters |
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creates |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas is called:
diffusion |
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convection |
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radiation |
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conduction |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. Examples of heat transfer by convection include water coming to a boil on a stove, ice melting, and steam from a cup of coffee.
Water has a refractive index of 1.33. Which of the following is true?
light is 1.33 times brighter in a vacuum than it is in water |
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light is 1.33 times dimmer in a vacuum than it is in water |
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light travels 1.33 times slower in a vacuum than it does in water |
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light travels 1.33 times faster in a vacuum than it does in water |
The speed of light varies based on the material that the waves are passing through. The refractive index of a material indicates how easily light travels through it compared to how easily light travels through a vacuum. For example, the refractive index of water is 1.33, meaning that light travels 1.33 times faster in a vacuum than it does in water.