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Light and Waves
Test review- Unit 2, Light and Waves
| Question | Answer |
|---|---|
| What does a wave transfer? | A wave transfers energy from one place to another. |
| Many waves travel by disturbing a material. What is this material called? | This material is called a medium. |
| Fill in the blank: _____________from the sun transfer energy to Earth across an ________________ | Light waves from the sun transfer energy to Earth across an empty space. |
| Fill in the blank: Waves can be classified by comparing the _____________that they cause particles in the medium to move. | Waves can be classified by comparing the direction that they cause particles in the medium to move. |
| This type of wave causes particles move back and forth in the same direction that the wave travels. Sound waves are an example of this. | In longitudinal waves particles move back and forth in the same direction that the wave travels. Sound waves are an example of this. |
| This type of wave causes the particles move up and down as the wave passes. Ocean waves are an example of this. | In transverse waves the particles move up and down as the wave passes. Ocean waves are an example of this. |
| Fill in the blank: Transverse waves and longitudinal waves often travel at _______________________ in a medium. | Transverse waves and longitudinal waves often travel at different speeds in a medium. |
| What type of wave requires a medium in order to travel? | Waves that require a medium are called mechanical waves. They can’t travel without a medium. |
| Fill in the blank: Waves travel at different_______________ in different ______________ Sound waves travel much faster in a liquid or solid than in air. | Waves travel at different speeds in different mediums. Sound waves travel much faster in a liquid or solid than in air. |
| What type of wave travels without a medium? | Electromagnetic waves travel without a medium, they are disturbances in the electromagnetic field. Examples include light, radio waves, and x-rays. |
| Any material that lets light pass, or transmit straight through, is ______________________ | Transparent |
| Any material that lets light pass, or transmit through it, but scatters the light in many directions is _________________ | Translucent |
| Any material that absorbs or reflects light instead of transmitting it is ____________ | Opaque |
| When light changes direction as it transmits through matter, this is called __________________. A prism is an example of this. | Refraction |
| _____________ occurs when light bounces off an opaque material. This is one thing that allows us to see objects' colors. | Reflection |
| __________________ occurs when light waves are sent in many directions, often when passing through a translucent medium. | Scattering |
| ________________ light is a mixture of all the visible light spectrum's colors. | White |
| A ____________ object absorbs almost all the light that hits it. | Black |
| Light's speed will (speed up/slow down/stay the same) when it moves from empty space to a medium. | Slow Down |
| If you look at a transparent stained glass window and the window appears green, what color light is being transmitted? | Green light |
| If you look at a translucent glass bottle and the bottle appears blue, what colors of light are being absorbed? | Red, orange, yellow, green, and violet |
| If you look at a yellow lemon, what color is being reflected into your eyes? | Yellow |
| If you look at an orange traffic cone, what colors are being absorbed by the cone? | Red, yellow, green, blue, violet |
| Mechanical waves travel most quickly through a (solid/liquid/gas) medium. | Solid |
| List each type of Electromagnetic wave from HIGHEST frequency to LOWEST frequency. | Gamma Ray, X-Ray, Ultraviolet Ray, Visible Light, Infrared, Microwave, Radio Wave |
| Sunlight is an electromagnetic wave. How does it transfer its energy to earth? | As radiation through empty space |
| The top of a wave is known as its ___________ | Crest |
| The low point of a wave is known as its ______________ | Trough |
| The "height" of a wave, or the distances it moves particles from their resting position, is known as its ______________- | Amplitude |
Created by:
MrsHartLovesScience
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