| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Momentum is a measure of how difficult it is for a moving object to stop. Which of the following is the formula for momentum?
\(\vec{p} = m\vec{v}\) |
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\(\vec{p} = { \vec{v} \over m}\) |
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none of these |
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\(\vec{p} = {m \over \vec{v}}\) |
Momentum is a measure of how difficult it is for a moving object to stop and is calculated by multiplying the object's mass by its velocity: \(\vec{p} = m\vec{v}\). Like velocity, momentum is a vector quantity as it expresses force applied in a specific direction.
What part of the food chain serves only as food for other organisms?
primary consumers |
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secondary consumers |
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producers |
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decomposers |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
mouth |
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stomach |
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small intestine |
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large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
During digestion, after proteins are broken down where does the undigested food go next?
stomach |
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esophagus |
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large intestine |
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small intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Herbivores are __________ that subsist on producers like plants and fungus.
scavengers |
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primary consumers |
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tertiary consumers |
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secondary consumers |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.