ASVAB General Science Practice Test 657948 Results

Your Results Global Average
Questions 5 5
Correct 0 3.15
Score 0% 63%

Review

1

What part of the brain is responsible for for balance, movement, and muscle coordination?

70% Answer Correctly

brainstem

medulla

cerebellum

cerebrum
Solution

The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.

2

Which of the following is not a characteristic of the Sun?

52% Answer Correctly

is a yellow dwarf star

is composed of hydrogen and helium

formed 2.6 billion years ago

makes up over 99% of the mass of the solar system
Solution

The Sun is a G-type main-sequence star (G2V) but is informally known as a yellow dwarf star. Composed of 73% hydrogen and 25% helium, the hot plasma that makes up the Sun reaches 9,900°F (5,505°C) at the surface. It formed approximately 4.6 billion years ago and makes up 99.86% of the mass in the solar system.

3

Which of the following temperatures is least like the others?

43% Answer Correctly

0K

absolute zero

-273°C

32°F
Solution

Absolute zero is the coldest possible temperature in the universe. In the Kelvin scale, absolute zero is 0K and in the Celsius scale it is -273°C.

4

What is a major difference between the somatic and autonomic nervous systems?

83% Answer Correctly

one controls thinking, the other controls feeling

one controls voluntary activity, one controls involuntary activity

each belongs to a different nervous system

one is inherited, the other is learned
Solution

Both are part of the peripheral nervous system. The somatic nervous system sends sensory information to the central nervous system and controls voluntary actions while the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.

5

As a cold front moves into an area, the heavier cool air __________ the lighter warm air that it is replacing.

65% Answer Correctly

pushes under

pushes above

mixes with

cancels out
Solution

A cold front is a warm-cold air boundary with the colder air replacing the warmer. As a cold front moves into an area, the heavier cool air pushes under the lighter warm air that it is replacing. The warm air becomes cooler as it rises and, if the rising air is humid enough, the water vapor it contains will condense into clouds and precipitation may fall.