ASVAB General Science Practice Test 764784 Results

Your Results Global Average
Questions 5 5
Correct 0 3.27
Score 0% 65%

Review

1

Which of Earth's layers has weather?

63% Answer Correctly

stratosphere

mesosphere

troposphere

thermosphere


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.


2

The Sun is a __________-type main-sequence star.

64% Answer Correctly

D

S

G

E


Solution

The Sun is a G-type main-sequence star (G2V) but is informally known as a yellow dwarf star. Composed of 73% hydrogen and 25% helium, the hot plasma that makes up the Sun reaches 9,900°F (5,505°C) at the surface. It formed approximately 4.6 billion years ago and makes up 99.86% of the mass in the solar system.


3

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.


4

50°F is how many °C?

72% Answer Correctly

58

122

-10

10


Solution

The formula to convert from F° to C° is:

\(C° = {5 \over 9} (F° - 32)\)

plugging in our values gives:

\(C° = {5 \over 9} (50 - 32)\)

\(C° = {5 \over 9} (18)\)

\(C° = {90 \over 9}\)

\(C° = 10\)


5

Force is measured in newtons (N) with 1 N being the force required to impart an acceleration of:

58% Answer Correctly

1 m/s to a mass of 1 kg

1 m/s2 to a mass of 1 kg/s2

1 m/s2 to a mass of 1 kg

1 mph to a mass of 1 kg


Solution

Weight is a force that describes the attraction of gravity on an object. Force is measured in newtons (N) with 1 N being the force required to impart an acceleration of 1 m/s2 to a mass of 1 kg.