| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
The four planets closest to the Sun are called terrestrial. What does terrestrial mean?
the planets have moons |
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the planets are Earth-like |
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the planets have magnetic fields |
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the planets have water |
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.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
reactants |
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products |
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components |
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fuel |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
"The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object." This describes which of Newton's laws of motion?
first |
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third |
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second |
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fourth |
Newton's second law of motion states that The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. This law basically means that the greater the mass of an object, the more force is needed to overcome its inertia.
In cell biology, cytokinesis results in two separate:
chromosomes |
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cells |
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chromatids |
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nuclei |
During cell division, the cytokinesis phase occurs when cytoplasm and cell membranes complete their separation resulting in two separate cells.
Which of the following states of matter exists at the highest temperature?
none of these |
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gas |
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solid |
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liquid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.