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Waves
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1995-03-22
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38 lines
Decide which of the following statements about waves are true, and which are false:
All E.M waves travel at the same speed/True
Sound can travel through space/False
Greater amplitude means more energy/True
Sound travels at the same speed as light/False
All waves carry energy/True
Ultrasonics are used in medicine/True
Sound is an electromagnetic wave/False
Sound is produced when something vibrates/True
An echo is a reflection of sound/True
Wave velocity is measured in Hertz/False
Amplitude depends on the height of a wave/True
Sound is a longitudinal wave/True
Ultrasonics are high frequency light waves/False
Sound waves have crests and troughs/False
Waves can be refracted/True
Light is a transverse wave/True
Frequency is measured in metres per second/False
Sound waves have compressions/True
Light is a longitudinal wave/False
Waves carry information/True
X-rays in medicine are completely safe/False
Velocity = frequency x wavelength/True
Amplitude does not affect loudness/False
When waves meet they can interfere/True
Waves can be reflected/True
Water waves move more quickly in shallow water/False
E.M waves can travel through a vacuum/True
Gamma rays are used in communication/False
All e.m waves move at the same speed in space/True
Sound waves can't be diffracted/False
Diffraction is the spreading out of waves/True
Light is not an electromagnetic wave/False
Higher pitch means higher frequency/True
Phase is not important in interference/False
Light can be polarised/True
Radiowaves have the shortest wavelength/False
Waves can't pass through solid objects/False