Exploring Wave Reflection and Refraction

Will the reflected wave be upright or inverted?

• Upright (Crest)

• Inverted (Trough)

What is the law of reflection?

• The angle of incidence is equal to the angle of refraction.

• The angle of incidence is equal to the angle of reflection.

• The angle of reflection is twice the angle of incidence.

• The angle of refraction is equal to the angle of reflection.

When a wave passes from one medium to another, what property of the wave changes?

• Frequency

• Wavelength

• Amplitude

• Speed

What happens to the speed of light when it travels from air into water?

• It increases.

• It decreases.

• It remains the same.

• It becomes zero.

Which of the following is an example of refraction?

• A mirror reflecting light.

• A pencil appearing bent in a glass of water.

• An echo in a canyon.

• A shadow on the ground.

What is the term for the bending of waves around obstacles?

• Reflection

• Refraction

• Diffraction

• Absorption

If the angle of incidence is 30 degrees, what is the angle of reflection?

• 15 degrees

• 30 degrees

• 45 degrees

• 60 degrees

Which of the following materials would cause the greatest refraction of light?

• Air

• Water

• Glass

• Diamond

What is the refractive index of a medium?

• The ratio of the speed of light in a vacuum to the speed of light in the medium.

• The ratio of the speed of sound in air to the speed of sound in the medium.

• The angle of incidence divided by the angle of refraction.

• The angle of reflection divided by the angle of incidence.

Which phenomenon explains why a straw looks bent when placed in a glass of water?

• Reflection

• Refraction

• Diffraction

• Interference