Interference and Diffraction

What type of stuff can be refracted? Choose the best answer.

• Light

• Sound

• Heat

• Anything that travels in waves

Tags

NGSS.HS-PS4-1

Light refracts when:

• It changes speed

• It changes from a particle to a wave

• Its density changes

• It encounters a solid object

Tags

NGSS.MS-PS4-2

What is the main difference between refraction and diffraction?

• Refraction is a phenomenon that affects light; diffraction is a phenomenon that affects sound.

• Refraction involves the bending of light; diffraction involves the bending and spreading of light, usually around an obstacle.

• Refraction usually happens in the atmosphere; diffraction usually happens closer to the earth's surface.

• Refraction involves changes to the density of light; diffraction involves changes to the speed of light.

Tags

NGSS.HS-PS4-1

What's an easy way to create an interference pattern of waves?

• Toss two pebbles into the water close to each other; the waves from each pebble will interfere with the other
• shine a light onto a black surface; the dark color will interfere with the transmission of light

These two waves will ________ interfere and result in a _________ amplitude.

• constructively, increased

• constructively, decreased

• destructively, increased

• destructively, decreased

This illustration best depicts which of the following behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

Tags

NGSS.MS-PS4-2

This image best depicts which of the following wave behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

This image depicts which of the following wave behaviors?

• Reflection

• Refraction

• Diffraction

• Resonance

The image depicts which of the following wave behaviors?

• Resonance

• Doppler Effect

• Interference

• Polarization

The image of the two waves depicts

• Constructive interference

• Destructive interference

Tags

NGSS.HS-PS4-1