| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
In the metric system, what prefix represents 10-3?
mega |
|
centi |
|
milli |
|
kilo |
In the metric system, milli is the prefix for 10-3.
Which of the following is the narrowest classification of life?
domain |
|
species |
|
family |
|
genus |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
The most diverse kindgom of life is which of the following?
plants |
|
protists |
|
fungi |
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animals |
Below domain, life is classified into six kingdoms: plants, animals, archaebacteria, eubacteria, and fungi. The last kingdom, protists, include all microscopic organisms that are not bacteria, animals, plants or fungi. (Archaebacteria and eubacteria are sometimes combined into a single kingdom, monera.)
The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?
reflection |
|
sound radiation |
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refraction |
|
Doppler effect |
The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.
The heat from the Sun traveling to Earth is an example of which of the following?
electricity |
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convection |
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radiation |
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conduction |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.