| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
The rows of the Periodic Table of the Elements are called:
shells |
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groups |
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families |
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periods |
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.
The heat from the Sun traveling to Earth is an example of which of the following?
conduction |
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electricity |
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convection |
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radiation |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, stabilize |
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decrease, raise |
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raise, decrease |
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stabilize, raise |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Universal donor blood can be given to a person with any blood type. Which blood type is the universal donor?
O |
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O-negative |
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AB |
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O-positive |
Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.
Which of the following would be found on a reflecting telescope?
convex mirror |
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concave mirror |
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convex lens |
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concave 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.