Waves and EM Spectrum Test Revision_H

Which of these statements is true?

• Sound waves transfer energy but not information
• Sound waves transfer information but not matter
• Light waves transfer both energy and matter
• Light waves transfer energy, information, and matter

What is the definition of the period of a wave?

• The length of time it takes one wave to pass a given point
• The number of waves passing a point in one second
• The distance from a point on one wave to a point in the same position as the next wave
• The maximum distance a point on the wave moves from its rest position

Which type of wave is sound?

• Transverse
• Longitudinal
• Electromagnetic
• Radio

Which of the following waves is an example of a transverse wave?

• Sound waves
• Light waves
• Seismic P-waves
• Compression waves

Which property is common to all electromagnetic waves?

• They can travel through a vacuum
• They require a medium to travel
• Their speed depends on frequency
• They transfer matter

Why are X-rays used to make images of the inside of the body, but ultraviolet rays are not?

• X-rays travel faster than ultraviolet rays
• X-rays penetrate soft tissues but not bones, UV light cannot penetrate the body

• X-rays are ionizing radiation, UV rays are not

• Ultraviolet rays are too dangerous for medical use

What happens to a ray of light when it passes from air into glass?

• It speeds up and bends away from the normal
• It slows down and bends towards the normal
• It reflects back into the air
• It continues in a straight line without bending

Which variable would you change to investigate how wavelength affects refraction in a glass block?

• The angle of incidence
• The wavelength of light
• The type of glass block
• The intensity of the light source

What is the frequency of a wave if 150 waves pass a point in 1 second?

• 150 Hz
• 150 m/s
• 150 m
• 0.15 Hz

Which method of measuring wave speed is likely to give more accurate results?

• Direct timing with a stopwatch
• Using the formula speed = frequency x wavelength

• Using a ruler and stopwatch
• Observing the wave’s reflection