| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
Which of the following is not a method of heat transfer?
radiation |
|
reflection |
|
convection |
|
conduction |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.
The __________ nervous system regulates involuntary activity in the heart, stomach, and intestines.
central |
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autonomic |
|
somatic |
|
peripheral |
Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
medulla |
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cerebrum |
|
brainstem |
|
cerebellum |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
As part of digestion, the liver produces bile which breaks down:
starches |
|
protein |
|
fat |
|
sugars |
The liver produces bile which emulsifies (separates) fat.
Sound travels fastest through which of the following media?
air |
|
water |
|
vacuum |
|
metal |
The speed of a sound wave will vary with the medium. Sound travels fastest through media that has particles that are very close together, like metal. Thus, it travels faster through water than through air and doesn't travel at all through a vacuum (there are no particles in empty space to vibrate).