How Do Waves Interact With Matter?
Pre/Post Test
- In which of these situations would light slow down?
 - From Glass to Air
 - From Ice to Water
 - From Plastic to Air
 - From Vacuum to Air
 
- The medium through which a mechanical wave passes can be a solid, a liquid, or a gas. Properties of a wave might change when it moves from one medium to another. What happens to the speed of a wave when it moves from a gas to a solid?
 - It speeds up
 - It slows down
 - It remains the same
 - It speeds up and then slows down
 
- Suppose a mechanical wave is traveling through medium A, when the wave enters medium B, it speeds up. Which of the following statements is true about medium A and B?
 - Medium A is a Solid and Medium B is a Gas
 - Medium A is a Liquid and Medium B is a Solid
 - Medium A is a Gas and Medium B is a Vacuum
 - Medium A is a Vacuum and Medium B is a Liquid
 
- Which of these statements describes a characteristic of all mechanical waves?
 - They are transverse waves
 - They are longitudinal waves
 - They travel though media
 - They travel through empty space
 
- Alex hears a loud rumble as he watches a space shuttle lift off from the launch pad. What medium does the sound wave travel through to get from the shuttle to Alex’s ears?
 - Air particles
 - Empty Space
 - Large vibrations
 - Mechanical Energy
 
- What is one way that electromagnetic waves differ from mechanical waves?
 - Electromagnetic waves move slower
 - Electromagnetic waves are longitudinal
 - Electromagnetic waves can travel through empty space
 - There is no difference between them
 
How Do Waves Interact With Matter?
Pre/Post Test
ANSWER KEY
- In which of these situations would light slow down?
 - From Glass to Air
 - From Ice to Water
 - From Plastic to Air
 - From Vacuum to Air
 
- The medium through which a mechanical wave passes can be a solid, a liquid, or a gas. Properties of a wave might change when it moves from one medium to another. What happens to the speed of a wave when it moves from a gas to a solid?
 - It speeds up
 - It slows down
 - It remains the same
 - It speeds up and then slows down
 
- Suppose a mechanical wave is traveling through medium A, when the wave enters medium B, it speeds up. Which of the following statements is true about medium A and B?
 - Medium A is a Solid and Medium B is a Gas
 - Medium A is a Liquid and Medium B is a Solid
 - Medium A is a Gas and Medium B is a Vacuum
 - Medium A is a Vacuum and Medium B is a Liquid
 
- Which of these statements describes a characteristic of all mechanical waves?
 - They are transverse waves
 - They are longitudinal waves
 - They travel though media
 - They travel through empty space
 
- Alex hears a loud rumble as he watches a space shuttle lift off from the launch pad. What medium does the sound wave travel through to get from the shuttle to Alex’s ears?
 - Air particles
 - Empty Space
 - Large vibrations
 - Mechanical Energy
 
- What is one way that electromagnetic waves differ from mechanical waves?
 - Electromagnetic waves move slower
 - Electromagnetic waves are longitudinal
 - Electromagnetic waves can travel through empty space
 - There is no difference between them
 
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