Physics Key Concepts

The diagram to the left depicts what?

• A transverse wave

• A longitudinal wave

• A water wave

• A p-wave 

Frequency measures the number of waves in 1 ______.

_________ is measured from the middle to the peak of the wave.

What waves travel faster through a solid than a gas?

• Sound

• Light

Give one danger associated with X-rays.

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Speed = distance / ?

• mass

• length

• time

• acceleration

The picture to the left depicts what phenomenon?

• Refraction

• Reflection

• Diffraction

• Dispersion

What is the only EM wave with a shorter wavelength than X-rays?

• Microwave

• Radiowave

• Visible light

• Gamma

Give one use of gamma radiation.

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Which electromagnetic wave is used to sterilise water?

• Ultraviolet

• Visible light

• Gamma rays

• Infrared