ASVAB General Science Practice Test 999548 Results

Your Results Global Average
Questions 5 5
Correct 0 3.19
Score 0% 64%

Review

1

__________ and __________ pair to strengthen bones.

65% Answer Correctly

iron, calcium

calcium, vitamin A

vitamin D, magnesium

vitamin D, calcium
Solution

Vitamin D helps calcium strengthen bones while also aiding muscle, nerve, and immune system function.

2

Which of the following describes the Earth's outer core?

45% Answer Correctly

primarily solid

solid

liquid

makes up most of the Earth's volume
Solution

The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).

3

Water has a refractive index of 1.33. Which of the following is true?

64% Answer Correctly

light is 1.33 times dimmer in a vacuum than it is in water

light is 1.33 times brighter in a vacuum than it is in water

light travels 1.33 times slower in a vacuum than it does in water

light travels 1.33 times faster in a vacuum than it does in water
Solution

The speed of light varies based on the material that the waves are passing through. The refractive index of a material indicates how easily light travels through it compared to how easily light travels through a vacuum. For example, the refractive index of water is 1.33, meaning that light travels 1.33 times faster in a vacuum than it does in water.

4

Earth's breathable air is held in which atmospheric layer?

67% Answer Correctly

troposphere

thermosphere

mesosphere

stratosphere
Solution

The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.

5

Water freezing or boiling is an example of which of the following?

79% Answer Correctly

phase transition

sublimation

cooling

heating
Solution

A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.