Science Unit 3 - Waves and Information

Front

What is frosted glass an example of?

Back

Translucent - it allows some light to pass through but not clear images.

Front

True or False: Light must reflect off an object before you can see it.

Back

True - we see objects because light reflects off them.

Front

What type of wave moves in the same direction as the particles it travels through?

Back

Longitudinal - in this type of wave, particles move back and forth in the same direction as the wave.

Front

What is another word for 'take in' when light hits an object and is not reflected or bent?

Back

Absorb - it means to take in light.

Front

What type of signal sends information continuously?

Back

Analog - it represents information in a continuous form.

Front

What is the term for a wave that moves perpendicular to the direction of the particles?

Back

Transverse - in this type of wave, particles move up and down while the wave moves forward.

Front

What do we call the distance between two consecutive crests of a wave?

Back

Wavelength - it measures the length of one complete wave cycle.

Front

What is the term for the height of a wave from its rest position?

Back

Amplitude - it indicates the strength or intensity of the wave.

Front

What happens when light bends as it passes from one medium to another?

Back

Refraction - it is the bending of light due to a change in speed.

Front

What is the term for materials that do not allow light to pass through?

Back

Opaque - these materials block light completely.