| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
atom |
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proton |
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neutron |
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electron |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
Which of the following states of matter exists at the highest temperature?
none of these |
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gas |
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liquid |
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solid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
The crust and upper mantle of the earth is called the:
hydrosphere |
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geosphere |
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atmosphere |
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lithosphere |
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).
Meteoroids, meteors and meteorites are categorized based on which of the following?
their temperature |
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their size |
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their location |
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their density |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.
The respiratory and circulatory systems are similar in that they:
add carbon dioxide |
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deoxygenate blood |
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transport oxygen |
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transport nutrients |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.