ASVAB General Science Practice Test 267049 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.85
Score	0%	77%

Review

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

	refraction
	Doppler effect
	reflection
	sound radiation

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.

Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.

78% Answer Correctly

	decrease, raise
	decrease, stabilize
	raise, decrease
	stabilize, raise

Solution

Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.

Which of the following is a decomposer?

89% Answer Correctly

	ferret
	pine tree
	fungi
	mosquito

Solution

Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.

An electrically charged atom is a(n):

49% Answer Correctly

	ion
	proton
	electron
	neutron

Solution

A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.

Carbohydrates are found in:

88% Answer Correctly

	animal sources
	vegetable oils
	sugars and starches
	food additives

Solution

Carbohydrates are major sources of energy for the body and are found in sugars (fruit, cane sugar, beets) and starches (bread, rice, potatoes, pasta).