Waves Revision Booklet

7/27/2019 Waves Revision Booklet

http://slidepdf.com/reader/full/waves-revision-booklet 1/4

Sound Sound waves are _____________ (transverse/longitudinal). They travel as

_________ (vibrations/EM waves). They are made up of ________

(compressions/extensions) and _________ (expansions/rarefactions) and

are detected by our _________ (ear drums/pinna). These vibrations are

converted to ________ (electrical/light) signals in the cochlea.

Sound can travel through solids, liquids and gases, but they cannot travel

through vacuums - this is because a vacuum _____________________.

Which of the following sounds are in the audible range for the average human?

12 kHz 200 Hz 21 kHz 0.5 kHz 1 Hz 0.1 MHz 15 kHz 900 Hz

Calculate the time period and frequency of each of the above waves.

____________________________________________________

____________________________________________________

Which of the waves above has the highest pitch? Explain your answer.

____________________________________________________

____________________________________________________

Which of the waves is the loudest? Explain your answer.

____________________________________________________

____________________________________________________

1 Second 1 Second

Name: Class: 

Waves Revision Booklet 

Waves transfer ______ and information without transferring ______.

Label each of the waves as either transverse of longitudinal.

Write a sentence about how each is defined. _____________________

___________________________________________________

___________________________________________________

___________________________________________________

7/27/2019 Waves Revision Booklet

http://slidepdf.com/reader/full/waves-revision-booklet 2/4

Properties of Waves

Label the wavelength and amplitude on the wave, and complete the table below.

Complete the two equations and hence answer the following calculations.

Frequency = Wave Speed = 

A radio wave has a time period of 5 x 10-7s (0.0000005 s). Calculate the

frequency and the wavelength. _______________________________

____________________________________________________

____________________________________________________

____________________________________________________

____________________________________________________

Wave Property Definition

Wavelength

Amplitude

Frequency

Time Period

Diffraction 

Draw on the wavelength of both waves.Complete the above diagrams for both waves.

Define diffraction:

____________________________________________________

____________________________________________________

____________________________________________________

Why does one wave diffract more than the other?

____________________________________________________

____________________________________________________

____________________________________________________

____________________________________________________

____________________________________________________

A  B 

7/27/2019 Waves Revision Booklet

http://slidepdf.com/reader/full/waves-revision-booklet 3/4

or

Refractive IndexComplete the two equations for calculating the refractive index:

Refractive Index (n) = Speed of Light in Vacuum sin i

Complete the above table using the equation you have just completed. Use the space below 

for your calculations.

A ray of light enters a glass block at 40 ° from the normal. The angle of refraction was 25°.

Calculate the refractive index of the glass. ________________________________

____________________________________________________________

____________________________________________________________

Complete the diagram:

What use could we have for this situation?

____________________________________

____________________________________

____________________________________

What other uses do we have for total internal reflection?

____________________________________________________________

____________________________________________________________

____________________________________________________________

____________________________________________________________

Substance  Speed of Light (m/s)  Refractive Index 

Air 300 000 000 1.0

Water 225 000 000

Perspex 200 000 000

Glass 1.5

Diamond 2.4

Electromagnetic Spectrum Electromagnetic _______ travels as _______ waves and transfers _____from one place to another. All electromagnetic waves can travel through avacuum, and they all travel at the same speed in a vacuum - the speed of 

_____. The electromagnetic spectrum is a continuous range of _________.The types of radiation that occur in each part of the spectrum have different 

uses and dangers, which depend on their wavelength and ________.Words: frequency radiation light energy wavelengths r transverse

Put the seven different sections of the EM spectrum in the table below, inorder of increasing wavelength. Then complete the table.

Hazards are associated with EM radiation. List some of the dangers below.

Microwaves: ___________________________________________Infrared: _____________________________________________

Ultraviolet: ____________________________________________Gamma-rays: ___________________________________________

Section Sources Detectors Uses

Gamma Rays Radioactive materials. Geiger-Müller tube.  Sterilising food and medical

equipment, radiotherapy.

X-rays X-ray tubes. Photographic film. X-radiography.

Ultraviolet UV lamps and the Sun. Skin, photographic

film.

Fluorescent tubes and UV 

tanning lamps.

Visible Luminous objects. Eyes, photographic

film, LDRs.

Seeing, communication

(optical fibres), photography.

Infrared Hot objects. Skin, blackened

thermometers.

Infrared heaters, remote

controls, thermal imaging.

Microwaves Microwave transmit-

ters and ovens.

Microwave receivers. Mobile phone and satellite

communication, cooking.

Radio Waves Radio transmitters,

TV transmitters.

Radio and TV aerials. Long-, medium- and short-

wave radio, TV.

7/27/2019 Waves Revision Booklet

http://slidepdf.com/reader/full/waves-revision-booklet 4/4

Reflection & RefractionComplete the equation for the law of reflection:

Angle of Incidence = Angle of Reflection 

Using the law of reflection, and using a protractor, complete the follow-

ing diagram:

Angle of incidence = Angle of reflection =

Give the definition of a virtual image:

_________________________________________________

_________________________________________________

What are the three properties of virtual image? Use the image to explain

your answers. ________________________________________

_________________________________________________

_________________________________________________

_________________________________________________

_________________________________________________

__________________________________

__________________________________

__________________________________

__________________________________

Glass

Air

What causes light to refract? _____________________________

_________________________________________________

Using the diagram below, explain what happens to a ray of light as it enters and exits a more optically dense medium.

_____________________

__________________________________________

_____________________

_________________________________________________

What would happen if the angle of incidence was 0°?

_________________________________________________

What is the name of the angle labelled C?

___________________________

Explain, in as much detail as you can, what happens as the angle of incidence increases.

_________________________________________________

_________________________________________________

_________________________________________________

_________________________________________________

_________________________________________________

_________________________________________________

Glass

Air

Air

Glass

Air

C

Glass

Air