The Nature of Light

Which of the following is NOT a source of light?

• The sun

• A lamp

• The moon

• A candle

Which of the following statements is true?

• Light behaves only like a particle.

• Light behaves only like a wave.

• Light can behave like a particle and a wave.

• Light behaves like a chemical reaction.

Which of the following is the light we see?

• Microwaves

• Visible Light

• Gamma Rays

• Infrared Light

Which of the following statements is true?

• All light is electromagnetic waves.

• All light is visible.

• All light is white light.

• Not all light is made of waves or particles.

Light is characterised by its

• wavelength

• speed

• frequency

• amplitude

Which of the following statements is true?

• Light can travel through a vacuum.

• Light MUST travel through some type of matter.

• Light can only travel through air.

Waves are

• vibrations

• zigzags

• quanta

The low point of a wave is called a

• trough

• crest

• wavelength

• resting position

A change in [blank] will produce a change in light intensity (brightness).

• wavelength

• trough

• crest

• amplitude

Choose all that apply.

You can determine the frequency of a wave by measuring the time that passes between

• two crests

• two troughs

• one wavelength

• half a wavelength