8th Grade Physical Science Review FL (6th/7th)

Front

What is net force?

Back

Net force is the total force acting on an object when all the individual forces are combined. It determines the object's acceleration.

Front

If Beri pulls with 45N and Ria pulls with 12N in the same direction, what is the net force?

Back

57N

Front

What type of wave is characterized by particle movement parallel to the direction of wave propagation?

Back

Longitudinal wave.

Front

What does amplitude represent in a wave?

Back

Amplitude is the maximum distance that particles of a medium move from their rest position when a wave passes through.

Front

What energy transformation occurs in a lamp when it is plugged in and functioning?

Back

Electrical energy is transformed into light energy.

Front

What is diffraction in the context of sound waves?

Back

Diffraction is the bending of waves around obstacles or through openings, allowing sound to be heard even when the source is not directly in line with the listener.

Front

What is the formula for calculating net force?

Back

Net Force = Force1 + Force2 + ... + ForceN (considering direction).

Front

What is the difference between transverse and longitudinal waves?

Back

Transverse waves have particle movement perpendicular to wave direction, while longitudinal waves have particle movement parallel to wave direction.

Front

What is 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 relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as frequency increases, wavelength decreases.