GCSE Waves

Which member of the electromagnetic spectrum is between radio waves and infrared?

• Gamma ray
• Ultra violet
• Microwave

What is the amplitude of a wave

• The distance between two similar points on a wave
• The number of waves that pass in a second
• The maximum height of a wave

What is the typical value of the speed of sound?

• 3.3 m/s
• 343 m/s
• 3000 m/s
• 3000000 m/s

What is the reason that light is refracted as it crosses from air to glass?

• It speeds up
• It slows down
• Nobody knows

What is a piece of evidence that when sound travels through air it is the wave and not the air that travels?

• You can feel the air moving
• When something makes a sound it does not create a vacuum
• You see lightning before you hear thunder

Some students investigate the properties of the waves generated in a ripple tank. One end of the tank is deeper than the other. What happens to the water waves as they pass from the shallow region to the deeper region?

• The wave slows down so the wavefronts move further apart
• The wave speeds up so the vavefronts move further apart
• The wave speeds up so the wavefronts get closer together

What is the equation that links wave speed, frequency and wavelength?

• v = f / λ
• v = f x λ
• v = λ /f

The signals from a baby monitor unit are transmitted as electromagnetic waves with a wavelength of 0.125m. The speed of electromagnetic waves = 3 x 10 ^8 m/s. Calculate the frequency of the signal.

• 2.4 Hz
• 2.4 x 10^6 Hz
• 2.4 x 10^9 Hz

The waes generated on the surface of water are transverse waves. What are the differences between transverse and longitudinal waves?

• Longitudinal waves always move faster than transverse waves
• In longitudinal waves the particlse oscillate parallel to the direction of energy transfer, while in transverse waves the oscillations are perpendicular to the direction of energy transfer.
• Longitudinal waves don't need a medium to travel through but transverse waves do.
• Longitudinal waves are made of areas of compression and rarefaction, while transverse waves are made of peaks and troughs

What is the equation that links time period and frequency?

• T =1/f
• f= λT
• F=vT