| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
As part of digestion, the liver produces bile which breaks down:
sugars |
|
protein |
|
starches |
|
fat |
The liver produces bile which emulsifies (separates) fat.
What kind of weather front is likely to create clouds and storms?
cold front |
|
temperate front |
|
stationary front |
|
warm front |
A warm front is the boundary between warm and cool (or cold) air when the warm air is replacing the cold air. Warm air at the surface pushes above the cool air mass creating clouds and storms.
212°F is how many °C?
\(135 {5 \over 9}\) |
|
100 |
|
0 |
|
-100 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (212 - 32)\)
\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)
\(C° = {900 \over 9}\)
\(C° = 100\)
Regulation of heart rhythm occurs in:
cerebrum |
|
medulla |
|
nerves |
|
cerebellum |
Part of the brainstem, the medulla is the connection between the brain and the spinal cord. It controls involuntary actions like breathing, swallowing, and heartbeat.
When light travels between two substances it bends. This is called:
convection |
|
reflection |
|
conduction |
|
refraction |
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.