| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.61 |
| Score | 0% | 72% |
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
arthropod |
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vertebrate |
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spiny |
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sentient |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.
Which of the following would you find in the side view mirror of a car?
concave mirror |
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convex mirror |
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concave lens |
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convex lens |
A concave (or converging) mirror bulges inward and focuses reflected light on the mirror's focal point where the mirror's angles of incidence converge. In contrast, a convex (or diverging) mirror bulges outward and diffuses the light waves that strike it. A common use of a concave mirror is in a reflecting telescope, a common use of a convex mirror is in the side view mirror of a car.
A __________ is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound.
neutron |
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ion |
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isotope |
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molecule |
A molecule is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound. The molecules of elements consist of two or more similar atoms, the molecules of compounds consist of two or more different atoms.
Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following?
reflection |
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convection |
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conduction |
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radiation |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
large intestine |
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small intestine |
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mouth |
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stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.