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powerpoint 6-8

Questions over powerpoint notes

QuestionAnswer
Which kind of water do water waves travel faster? deep water
What point along a wave front is the wave moving? perpendicular to the wave front
What represents the direction of motion of the wave? rays
Where does the wave refract when the depth changes? at the boundry
what causes uneven winds or sound to travel through uneven air? sound refraction
Which type of air does sound travel faster? warmer air
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? fast
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
Created by: MSeise
 

 



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