| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
The first step in the water cycle is:
infiltration |
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precipitation |
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reclamation |
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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.
__________ and __________ pair to strengthen bones.
vitamin D, magnesium |
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calcium, vitamin A |
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iron, calcium |
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vitamin D, calcium |
Vitamin D helps calcium strengthen bones while also aiding muscle, nerve, and immune system function.
The gravitational interaction of Earth and the Moon is responsible for which of these?
day and night cycle |
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the northern lights |
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seasons |
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tides |
Tides are caused by the gravitational interaction of Earth and the Moon.
Plant cells are surrounded by:
only a cell membrane |
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neither a cell membrane nor a cell wall |
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a cell membrane and a cell wall |
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only a cell wall |
Animal cells are surrounded by a semipermeable membrane which allows for the transfer of water and oxygen to and from the cell. In plant cells, the cell membrane is surrounded by a somewhat rigid cell wall which provides the cell structure and support.
Which of the following is not true about mass and weight?
mass depends on the location where it is measured |
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weight depends on the location where it is measured |
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mass is the amount of matter something has |
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weight is the force exerted on an object by gravity |
Mass is the amount of matter something has while weight is the force exerted on an object's mass by gravity. So, although a person's mass doesn't change when going from the Earth to the Moon, their weight will decrease because the force of the Moon's gravity is much less than that of Earth.