Wave Behavior

What is the definition reflection?

• The bending of waves as they enter a new medium

• Bouncing back of waves from a surface that it can’t pass through

• The bending of waves as they pass through openings or around corners

• When two interfering waves have a displacement in the same direction, two crests and two troughs overlap. Increased amplitude.

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NGSS.MS-PS4-2

What does reflection include(s)?

• angle of incidence

• angle of reflection

• angle of bounce

• angle of reflecting

Example(s) of Reflection

• Echo

• Echo location

• rough surface

• smooth surface

• bouncing

What is the definition of Refraction?

• The bending of waves as they enter a new medium

• When two interfering waves have a displacement in the opposite direction, crest and trough overlap. Zero amplitude.

• When two interfering waves have a displacement in the same direction, two crests and two troughs overlap. Increased amplitude.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

Rainbows are made by...

• water

• rain

• Water droplets act as prisms to separate white light into the ROYGBIV spectrum

What is the definition of Diffraction?

• The bending of waves as they enter a new medium

• Bouncing back of waves from a surface that it can’t pass through

• When two interfering waves have a displacement in the opposite direction, crest and trough overlap. Zero amplitude.

• The bending of waves as they pass through openings or around corners

· Why can we hear around a corner but not see?

• Increased amplitude of the light wave means brighter light

• the smaller the opening the more diffraction, light waves are so small you will have little diffraction.

• Decreased amplitude of the light wave means dimmer light

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NGSS.MS-PS4-1

Which of the figures represents reflection?

• A
• B
• C
• D

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NGSS.MS-PS4-2

Which of the following represents refraction?

• A
• B
• C
• D

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NGSS.MS-PS4-2

When a wave strikes an object and bounces off

• medium
• refraction
• reflection
• interference

Tags

NGSS.MS-PS4-2