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science ?s-waves
| Question | Answer |
|---|---|
| what do waves transfer? | energy |
| what is NOT transferred by waves? | matter |
| if the frequency of the vibrating object decreases, how does the wavelength of the resulting wave change? | the wavelength will increase |
| what type of waves do not need a medium to transfer energy? | Electromagnetic waves |
| what is a mechanical wave? | a wave that requires a medium to transfer energy |
| 2 types of mechanical waves | transverse and longitudinal waves |
| what type of wave is a sound wave? | longitudinal |
| what type of medium does sound travel fastest in? Light? | sound- solids light- vacuum |
| what are seismic waves? | waves that through the earths crests and along the surface of the earth. they are caused by the bending and moving of a tectonic plate. theyre both transverse and longitudinal |
| is the water from a tsunami the same water that was above the earthquake on the ocean floor? | no the energy travels through the water |
| 3 characteristics of a wave you can measure | speed wavelength frequency period and amplitude |
| what is meant by the frequency of a wave? what is the unit? | number of waves that pass through a point in a second hertz (hz) |
| how are period and frequency related? | theyre inversely related |
| of the frequency of a given wave increases what happens to the wavelength? | the wavelength decreases |
| 2 types of interferences and how do they work | constructive- increases amplitude destructive- decreases amplitude |
| why does a red apple appear red? | all frequencies of white light are absorbed except red which is reflected |
| how can sound waves be used? | ultrasounds and breaking up kidney stones |
| describe the dif between a sound wave with a large amplitude and one with a small one | a sound wave with a larger amplitude will sound louder |
| how can the speed of a wave be changed? | change the medium |
| explain how the frequency of a wave changes when the wavelength of the wave increases | the frequency will decrease |
| what occurs when a wave passes from one medium to another? | refraction- bending absorption- te diffraction- bends around reflection- bounces back |
| how is an echo produced? | reflecting sound waves |
| why does a tree in a path of sunlight create a shadow instead of light spreading around the tree? | the small wavelength of light does not allow for much diffraction |
| what happens to the energy of a wave that gets absorbed as it moves into a new medium? | transferred into thermal energy |
| when looking at a straw in a glass of water, why does the straw look broken? | refraction- the speed of light changes as it enters the water causing the wave to bend |
Created by:
nataliekirk