| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
In the food chain, omnivores may be which of the following?
primary or tertiary consumers |
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secondary or tertiary consumers |
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secondary consumers or scavengers |
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primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
A subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. This desribes which of the following?
electron |
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neutron |
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proton |
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isotope |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
The envelope of gases surrounding the planet is called the:
lithosphere |
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hydrosphere |
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atmosphere |
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geosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).
Which of the following is the formula for work?
\(W = {\vec{F} \over \vec{d} }\) |
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\(W = {{F}\over{d}}\) |
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\(W = {F}{d}\) |
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\(W = \vec{F}\vec{d}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
The large intestine does which of the following?
breaks down starches |
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processes the physical waste produced by digestion |
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breaks down fats |
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breaks down proteins |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.