ASVAB General Science Practice Test 187127 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.60
Score	0%	72%

Review

Which of the following is not a medium for sound waves?

59% Answer Correctly

	solid
	none of these is a medium for sound waves
	liquid
	vacuum

Solution

A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.

The number system most used in science is the:

94% Answer Correctly

	English system
	American system
	metric system
	British system

Solution

The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.

Molecules and atoms that are outputs from a chemical reaction are known as which of the following?

57% Answer Correctly

	reactants
	results
	products
	side effects

Solution

During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).

Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.

67% Answer Correctly

	double the number of
	fewer
	equal numbers of
	more

Solution

An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.

Which of blood component carries oxygen?

84% Answer Correctly

	red blood cells
	white blood cells
	plasma
	platelets

Solution

Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.