| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
An element in the physical state of __________ maintains a constant volume and shape.
solid |
|
gel |
|
gas |
|
liquid |
An element in a solid state has atoms or molecules that are constricted and do not move freely. Solids maintain a constant volume and shape and exist at a lower temperature than liquids or gases.
-40°F is how many °C?
\({40 \over 9}\) |
|
-40 |
|
-8 |
|
\(-{40 \over 9}\) |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
A large naturally occurring community of flora and fauna occupying a major habitat is:
a food chain |
|
a population |
|
a community |
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a biome |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
When light travels between two substances it bends. This is called:
refraction |
|
convection |
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conduction |
|
reflection |
Because different materials have different refractive indices, light changes speed when passing from one material to another. This causes the light to bend (refraction) at an angle that depends on the change in refractive index between the materials. The greater the difference, the higher the angle of refraction.
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
diaphragms |
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blood cells |
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capillaries |
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bronchioles |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.