8th Grade Semester Test Review

Front

What is the relationship between the size of an electromagnet and the number of coils?

Back

The size of the electromagnet is directly proportional to the number of coils.

Front

What is the gravitational force exerted on an object commonly referred to as?

Back

Weight.

Front

What is the SI unit for measuring acceleration?

Back

m/s².

Front

What happens to the brightness of lights in a parallel circuit when another light is added?

Back

There will be no change in the amount of light given off.

Front

What is the term for the height of a wave from normal level to the highest point?

Back

Amplitude.

Front

What is the definition of mass?

Back

Mass is the amount of matter in an object, typically measured in kilograms (kg).

Front

What is the formula for calculating weight?

Back

Weight = mass × gravitational acceleration (W = mg).

Front

What is the definition of frequency in relation to waves?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

What is the term for the distance between two consecutive crests of a wave?

Back

Wavelength.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R): V = IR.