| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.47 |
| Score | 0% | 69% |
-40°F is how many °C?
-8 |
|
-40 |
|
\(-{40 \over 9}\) |
|
\({40 \over 9}\) |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebellum |
|
brainstem |
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medulla |
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cerebrum |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
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.
Which of these is not a component of blood?
marrow |
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red blood cells |
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plasma |
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white blood cells |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
The number system most used in science is the:
American system |
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British system |
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metric system |
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English system |
The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.