| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
side effects |
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products |
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reactants |
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results |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
"For every action, there is an equal and opposite reaction." This describes which of Newton's laws of motion?
third |
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first |
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second |
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fourth |
Newton's third law of motion states that For every action, there is an equal and opposite reaction. When an object exerts a force on another object, the second object exerts a force of equal magnitude in the opposite direction on the first object.
Herbivores are __________ that subsist on producers like plants and fungus.
scavengers |
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tertiary consumers |
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secondary consumers |
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primary consumers |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
Which of the following is the formula for power?
\(P = \vec{w}t\) |
|
\(P = {\vec{w} \over t}\) |
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\(P = w t\) |
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\(P = {w \over t}\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).
Which of the following is not a terrestrial planet?
Mercury |
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Venus |
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Earth |
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Jupiter |
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.