| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
medulla |
|
brainstem |
|
cerebrum |
|
cerebellum |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
The two heart chambers that collect blood are called:
atria |
|
aorta |
|
ventricles |
|
valves |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
Water freezing or boiling is an example of which of the following?
phase transition |
|
sublimation |
|
cooling |
|
heating |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
small intestine |
|
mouth |
|
stomach |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of Earth's layers has weather?
stratosphere |
|
thermosphere |
|
mesosphere |
|
troposphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.