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Waves
GCSE Physics and combined science
| Question | Answer |
|---|---|
| The maximum displacement of a point on a wave away from its undisturbed position is the… | Amplitude |
| The distance from a point on one wave to the equivalent point on the next wave is the … | wavelength |
| The number of waves passing a point each second is the… | Frequency |
| Name an example of a longitudinal wave | Sound |
| Name an example of a transverse wave | light, water, any electromagnetic |
| Oscillations are along the same direction as the direction of travel is a _________ wave | longitudinal |
| Oscillations are at right angles to the direction of travel in a ____________ wave | transverse |
| The time needed for one wave to pass a given point is the… | period |
| The region in a longitudinal wave where particles are closest together is a … | compression |
| The region in a longitudinal wave where particels are furthest apart is a… | rarefaction |
| An object is said to _________ radiation when energy from an EM wave is taken up by the object | absorb |
| An object is said to _________ radiation when a wave can pass through the object | transmit |
| The process taking place when a wave bounces off of a surface | reflection |
| The process taking place when a wave enters a different density medium and changes direction | refracion |
| Refraction changes both the _________ and ___________ of a wave | direction and speed |
| Which two angles are equal in reflection | angle of incidence and angle of reflection |
| Draw a transverse wave and label the wavelength and amplidtue | teacher to draw on board… |
| Draw a longitudinal wave and label the wavelength | teacher to draw on board… |
| Write the equation linking frequency, wavelength and wave speed | v = fλ |
| What is the unit of frequency? | Hertz (Hz) |
| What is the unit of wavelength? | metres (m) |
| What is the unit of wave speed? | metres per second (m/s) |
| What is the speed of elecrtomagnetic radiation? | 300 000 000 m/s |
| What is the EM radiation with the shortest wavelength? | gamma |
| What is the EM radiation with the longest wavelength? | Radio |
| What is the EM radiation with the highest frequency? | Gamma |
| What is the EM radiation with the lowest frequency? | Radio |
| List the EM spectrum from long to short wavelength. | Radio, microwave, infrared, visible, UV, X-rays, gamma |
| Can EM waves travel through space? | yes |
| Can sound waves travel through space? | no |
| Does a sound wave travel faster in water or air? | water |
| Name a use of radio waves | TV and radio transmission |
| What EM wave is used for satellite communication? | microwave |
| Give one use of microwaves | cooking food |
| Give two uses of IR radiation | electrical heaters, infrared cameras |
| Give a use of visible radiation | Fibre optic communications |
| Which radiation is used in sun tanning? | UV |
| Give one use of X-rays. | Medical imaging |
| Give one use of gamma rays | Medical treatments |
| Why are X-rays good for taking images of bone? | absorbed by bone but transmitted through soft tissue |
| Why are gamma rays used in medical treatment? | Can kill cancer cells |
| What are the risks of exposure to UV radiation? | Premature skin aging, increased risk of skin cancer |
| What are the risks of exposure of X-rays? | X-rays are ionising so can cause mutations which may result in cancer |
| What are the risks of exposure to gamma rays? | Gamma rays are ionising so can cause mutations which may result in cancer |
Created by:
JBearfield
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