| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
Elements that belong to the same period in the Periodic Table of the Elements have the same number of:
electron shells |
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atomic mass units |
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protons |
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electrons |
The rows of the Periodic Table are called periods and contain elements that have the same number of electron shells ordered from lower to higher atomic number.
Large, puffy, mid-altitude clouds with a flat base and a rounded top describe which of the following?
cirrus clouds |
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cumulus clouds |
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stratus clouds |
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fog |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.
Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.
double the number of |
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equal numbers of |
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fewer |
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more |
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 large intestine does which of the following?
processes the physical waste produced by digestion |
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breaks down proteins |
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breaks down starches |
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breaks down fats |
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.
Changes to an object's speed or direction of motion are caused by which of the following?
a force |
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work |
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power |
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kinetic energy |
Force is applied to change an object's speed or direction of motion.