| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
The brain and spinal cord make up the __________ nervous system.
autonomic |
|
central |
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peripheral |
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somatic |
The nervous system consists of the brain and spinal cord (central nervous system) and the peripheral nervous system which is the network of nerve cells (neurons) that collect and distribute signals from the central nervous system throughout the body.
Changes to an object's speed or direction of motion are caused by which of the following?
work |
|
kinetic energy |
|
a force |
|
power |
Force is applied to change an object's speed or direction of motion.
What kind of weather front is likely to create clouds and storms?
stationary front |
|
warm front |
|
cold front |
|
temperate 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.
Which of the following does not filter air as part of the respiratory system?
pharynx |
|
trachea |
|
nasal cavity |
|
epiglottis |
After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis which prevents food from entering the airway.
In the metric system, what prefix represents 103?
kilo |
|
mega |
|
milli |
|
centi |
Kilo is the metric system prefix for 103.