ASVAB General Science Practice Test 753153 Results

	Your Results	Global Average
Questions	5	5
Correct	0	2.75
Score	0%	55%

Review

Meteoroids, meteors and meteorites are categorized based on which of the following?

45% Answer Correctly

	their size
	their temperature
	their density
	their location

Solution

Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.

What part of the nervous system is responsible for controlling involuntary actions like breathing, swallowing, and heartbeat?

63% Answer Correctly

	medulla
	cerebellum
	cerebrum
	spinal cord

Solution

Part of the brainstem, the medulla is the connection between the brain and the spinal cord. It controls involuntary actions like breathing, swallowing, and heartbeat.

Which of the following is true about species groups?

47% Answer Correctly

	a population is made up of a group of communities
	a biome is a made up of a group of biospheres
	a community is made up of a group of populations
	an ecosystem is a biological population

Solution

A population is a group of organisms of the same species who live in the same area at the same time. A community is a group of populations living and interacting with each other in an area.

Which of the following is not true about mass and weight?

55% Answer Correctly

	weight is the force exerted on an object by gravity
	mass depends on the location where it is measured
	mass is the amount of matter something has
	weight depends on the location where it is measured

Solution

Mass is the amount of matter something has while weight is the force exerted on an object's mass by gravity. So, although a person's mass doesn't change when going from the Earth to the Moon, their weight will decrease because the force of the Moon's gravity is much less than that of Earth.

The ozone layer is in which of Earth's atmospheric layers?

66% Answer Correctly

	mesosphere
	stratosphere
	troposphere
	thermosphere

Solution

The stratosphere is just above the troposphere and is stratified in temperature with warmer layers higher and cooler layers closer to Earth. This increase in temperature is a result of absorption of the Sun's radiation by the ozone layer.