AFL Heat, Light and Sound

Which form of energy requires a medium through which to pass?

• sound energy

• heat energy

• light

Which type of energy doesn't necessarily require a medium through which to pass

• heat

• light

• sound

• wavelength

• speed

• frequency

• hertz

It would be true to say that

• gamma rays have long wavelengths

• radiowaves are high frequency waves

• many wavelengths make up visible light

• gamma rays are the fastest of all waves

Match the following

• B

• Trough

• D

• wavelength

• C

• amplitude

• A

• crest

Reorder the following of increasing frequency

• Gamma rays

• X-ray

• visible light

• UV

• radiowaves

• 5 Hz
• 10 Hz
• 15 Hz
• 20 Hz

A wave is produced and found to be of a specific wavelength and frequency. If the wavelength is doubled and the frequency halved, what would the new speed be?

• The new speed is doubled.
• The new speed remains the same as the original speed.
• The new speed is halved.
• The new speed is zero.

Match the heat transfer with the correct description

• heat travelling through solids

• convection

• heat travelling through a liquid/gas

• radiation

• heat travelling through space or vacuum

• conduction

Light is being

• diffracted

• rarefacted

• refracted

• reflected