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Questions over powerpoint notes
|Which kind of water do water waves travel faster?
|What point along a wave front is the wave moving?
|perpendicular to the wave front
|What represents the direction of motion of the wave?
|Where does the wave refract when the depth changes?
|at the boundry
|what causes uneven winds or sound to travel through uneven air?
|Which type of air does sound travel faster?
|Which way do sound waves bend against a warm ground?
|they bend away
|what temperature is the air above the ground when the speed of sound near the ground is reduced?
|the ground is colder
|A higher speed of a wave front above the ground causes a bending in what direction?
|toward the Earth
|give two examples of refraction of light
|a star twinkling and a pencil in a glass of water appearing bent.
|What is the speed of light in air?
|Does light travel slower or faster than air in water?
|It travels slower in water than in air.
|How does light bend when it slows down as it hits the water?
|It bends toward the normal.
|How does light bend as it moves from the water to the air?
|It bends away from the normal.
|When the sound bends due to changes in wind speed or temperature, how is the refraction?
|the refraction is gradual