Waves
Q1.
(a)    Diagram 1 shows two waves.
Diagram 1
 
(i)      Name one wave quantity that is the same for the two waves.
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(1)
(ii)     Name one wave quantity that is different for the two waves.
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(1)
(iii)    The waves in Diagram 1 are transverse.
Which one of the following types of wave is not a transverse wave?
Draw a ring around the correct answer.
 
gamma rays	sound	visible light	
(1)
(b)     Diagram 2 shows water waves in a ripple tank moving towards and passing through a gap in a barrier.
Diagram 2
 
Every second, 8 waves pass through the gap in the barrier. The waves have a wavelength of 0.015 metres.
Calculate the speed of the water waves and give the unit.
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Speed = ___________________________________
(3)
(Total 6 marks)
Q2.
The table shows the electromagnetic spectrum.
Three types of wave have been missed out.
 
(i)      Use words from the box to complete the table.
 
      infra red rays      radio waves           X-rays	
(2)
(ii)     Which one of the following gives a use of gamma rays?
Put a tick () in the box next to your choice.
 
to communicate with satellites	 	
to see objects	 	
to kill cancer cells	 	
(1)
(iii)    Complete the following sentence by drawing a ring around the correct word in the box.
 
 	energy	 	
All electromagnetic waves move	gases	from one place to another.	
 	particles	 	
(1)
(Total 4 marks)