grade 8 quiz in light and wave

This is a disturbance in space and time that repeatedly and progressively

propagates from one point to another.

• Air

• wave

• motion

• power

In the EM waves mnemonics RMIVUXG the R stands for?

• Ray

• Rod

• Radio

• Ring

This wave has the strongest frequency and energy.

• Gamma ray

• Infrared

• Visible Light

• X-RAY

This type of wave needs a medium to propagate.

• Electromagnetic wave

• Mechanical wave

Which among the following is the only wave that can be seen by the naked eye?

• Ultraviolet wave

• Infrared

• Visible Light

• Microwave

This is an example of mechanical wave.

• sound wave

• visible light

• x-ray

• infrared

The distance between two crests or two trough

• Frequency

• amplitude

• normal line

• wavelenght

The part of the eye that is lined with light-sensitive cells

known as rods and cones.

• cornea

• pupil

• retina

• lens

The phenomenon of separating light into different colors is called?

• Dispersion

• radiation

• disappearance

• dissolution

The Highest peak of wave

• TROUGH

• FREQUENCY

• AMPLITUDE

• CREST