Chapter 2 - Waves

Question 1

What are waves

Answer 1

waves is made up of motion that repeats itself

Question 2

what is the highest point of a wave

Answer 2

crest

Question 3

what is the lowest point of a wave

Answer 3

trough

Question 4

what is the height of the crest of a wave

Answer 4

amplitude

Question 5

what is the meaning of wave length in a wave

Answer 5

a wavelength is the length between two successful waves

Question 6

what is frequency

Answer 6

frequency is the number of complete waves per second

Question 7

what is the S.I. unit for frequency

Answer 7

hertz

Question 8

what is the formula for frequency

Answer 8

1 ÷ time

Question 9

which wave has the longest wavelengths

Answer 9

radio waves

Question 10

Which wave has the shortest wavelength but has the biggest frequencies

Answer 10

Gamma ray

Question 11

State a use for radio waves

Answer 11

Telecommunications
TV broadcasting

Question 12

State a use for microwaves

Answer 12

Satellite communications

Question 13

State a use for infrared waves

Answer 13

Remote control units

Question 14

Another word for infrared waves

Answer 14

Heat waves

Question 15

State a use for visible light

Answer 15

Optical fibres
photosynthesis

Question 16

State a use for ultraviolet

Answer 16

Tanning
Forgery detector to detect fake money
Sterilisation of medical equipment

Question 17

Which direction does the energy flow in the waves when using a rope

Answer 17

Left and right

Question 18

Which direction does the energy flow in the waves when using a spring

Answer 18

Up and down