ASVAB General Science Practice Test 172187 Results

Your Results Global Average
Questions 5 5
Correct 0 2.83
Score 0% 57%

Review

1

The Earth's rocks fall into three categories based on how they're formed. Which of the following is formed from the hardening of molten rock?

65% Answer Correctly

igneous

sedimentary

marble

metamorphic
Solution

The Earth's rocks fall into three categories based on how they're formed. Igneous rock (granite, basalt, obsidian) is formed from the hardening of molten rock (lava), sedimentary rock (shale, sandstone, coal) is formed by the gradual despositing and cementing of rock and other debris, and metamorphic rock (marble, slate, quartzite) which is formed when existing rock is altered though pressure, temperature, or chemical processes.

2

DNA is encoded through a combination of which of the following?

47% Answer Correctly

nucleotides

genes

helix

gametes
Solution

Deoxyribonucleic acid (DNA) is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern.

3

Which is the proper order of Earth's atmospheric layers from the surface up to space?

57% Answer Correctly

stratosphere, troposphere, mesosphere, thermosphere

thermosphere, mesosphere, stratosphere, troposphere

troposphere, stratosphere, mesosphere, thermosphere

mesosphere, thermosphere, stratosphere, troposphere
Solution

The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.

4

The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?

70% Answer Correctly

sound radiation

reflection

refraction

Doppler effect
Solution

The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.

5

In the food chain, omnivores may be which of the following?

45% Answer Correctly

secondary or tertiary consumers

primary or secondary consumers

secondary consumers or scavengers

primary or tertiary consumers
Solution

Secondary or tertiary consumers may be omnivores.