ASVAB General Science Practice Test 283386 Results

Your Results Global Average
Questions 5 5
Correct 0 3.78
Score 0% 76%

Review

1

A major difference between sound waves and light waves is which of the following?

70% Answer Correctly

all of these are correct

a sound wave cannot travel through a vacuum

a sound wave is mechanical while a light wave is electromagnetic

a sound wave is much slower than a light wave


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.


2

212°F is how many °C?

78% Answer Correctly

100

-100

0

\(135 {5 \over 9}\)


Solution

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

\(C° = {5 \over 9} (F° - 32)\)

plugging in our values gives:

\(C° = {5 \over 9} (212 - 32)\)

\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)

\(C° = {900 \over 9}\)

\(C° = 100\)


3

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

67% Answer Correctly

more

double the number of

equal numbers of

fewer


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.


4

Vector quantities are fully described by which of the following?

75% Answer Correctly

a direction and a polarity

a direction only

a magnitude only

a magnitude and a direction


Solution

Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction.  In contrast, scalar quantities are quantities that are fully described by a magnitude only.  A variable indicating a vector quantity will often be shown with an arrow symbol:  \(\vec{v}\)


5

An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.

85% Answer Correctly

arthropod

spiny

sentient

vertebrate


Solution

An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.