| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.18 |
| Score | 0% | 64% |
In the water cycle, infiltration is most closely related to:
runoff |
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oceans |
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water table |
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rivers |
The water then accumulates as runoff and eventually returns to bodies of water or is absorbed into the Earth (infiltration) and becomes part of the water table, an underground resevoir of fresh water.
Which of the following is the correct order for types of radiation from lowest to highest frequency?
radio waves → visible light → gamma rays |
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visible light → ultraviolet light → radio waves |
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microwaves → radio waves → visible light |
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infrared waves → microwaves → ultraviolet light |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.
The four planets closest to the Sun are called terrestrial. What does terrestrial mean?
the planets have magnetic fields |
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the planets have water |
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the planets have moons |
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the planets are Earth-like |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.
The __________ is a system of muscles that allows breathing.
pulmonary |
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trachea |
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bronchioles |
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diaphragm |
The diaphragm is a system of muscles that allows breathing. During inhalation, the diaphragm expands and air rushes in to fill the space created. Then, during exhalation, the diaphragm contracts and forces the air back out.
As part of digestion, the liver produces bile which breaks down:
sugars |
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protein |
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fat |
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starches |
The liver produces bile which emulsifies (separates) fat.