                    The electromagnetic spectrum
16.   These rays have the shortest wavelength of all. They are emitted by some radioactive substances.
       They are often used in radiotherapy to kill cancer cells.
                        gamma rays        ultraviolet     infrared      microwaves

17.   Waves with a high frequency have a _________ wavelength
                                                long    short

18.   The longer the wavelength the _______ the frequency
                                              lower     higher

19.   Electromagnetic waves are ________ waves.
                             happy      noisy     transverse       longitudinal

20.   In __________ waves the vibrations are at right angles to the direction of the wave.
                                       longitudinal      transverse

21.   In __________ waves the vibrations are in the same direction as the direction of the wave.
                                       longitudinal      transverse

22.   Electromagnetic waves can travel through a vacuum.
                                                true    false

23.   Sound waves are part of the electromagnetic spectrum.
                                                true    false

24.   Light waves, water waves, microwaves and the ‘Mexican wave’ are all examples of ____________
       waves.
                            electromagnetic        transverse        longitudinal




Use the “The electromagnetic spectrum: bounce quiz” at the eChalk website to help you answer these questions.

                                                            Worksheet to complement eChalk resource:
                                                          “The electromagnetic spectrum: Bounce quiz”
                                                                               http://www.eChalk.co.uk


          (Answers) The electromagnetic spectrum
Select the correct answer from the text below each question:

1.    Gamma rays travel faster than visible light.
                                                true  false
2.    All electromagnetic waves travel at the same speed in a vacuum.
                                                true  false
3.    The speed of light in a vacuum is…
                                                                                  infinite
4.    White light is a mixture of colours that can be split into the visible spectrum by a …
                                   rainbow      prison      migraine        prism
5.    Which of the following has the highest frequency?
                             ultraviolet    microwaves         x-rays      radiowaves
6.    Which of the following has the highest frequency?
                            visible light    microwaves        infrared      radiowaves
7.    Which of the following has the longest wavelength?
                           gamma rays       visible light     ultraviolet      radiowaves
8.    Which of the following has the shortest wavelength?
                           gamma rays       visible light     ultraviolet      radiowaves
9.    Which of the following has the lowest frequency?
                              ultraviolet    microwaves        radiowaves          x-rays
10.    These waves have the longest wavelength and are used to carry signals for radar, TV and radio
                             radiowaves       ultraviolet     microwaves         infrared
11.    These rays are absorbed by bones and teeth but pass through flesh
                                radiowaves      x-rays      visible light     infrared
12.    These waves are used to cook food (they are absorbed by water molecules in the food)
                             gamma rays        x-rays     micro-waves         ultraviolet
13.    Our eyes are able to see waves in this part of the electromagnetic spectrum
                                    ultraviolet     radio    visible     infrared
14.    Any warm object emits this wave. Night vision cameras are able to detect this type of wave.
                            gamma rays       visible light     microwaves          infrared
15.    These rays are emitted by the sun (and other white hot objects). Over-exposure to these rays can
        burn the skin and cause skin cancer.
                             gamma rays       ultraviolet     microwaves          infrared
16.    These rays have the shortest wavelength of all. They are emitted by some radioactive substances.
        They are often used in radiotherapy to kill cancer cells.
                             gamma rays       ultraviolet     infrared     microwaves
17.    Waves with a high frequency have a _________ wavelength
                                                   long     short
18.    The longer the wavelength the _______ the frequency
                                                  lower     higher
19.    Electromagnetic waves are ________ waves.
                                  happy     noisy      transverse      longitudinal

20.    In __________ waves the vibrations are at right angles to the direction of the wave.
                                        longitudinal    transverse
21.    In __________ waves the vibrations are in the same direction as the direction of the wave.
                                        longitudinal    transverse
22.    Electromagnetic waves can travel through a vacuum.
                                               true    false
23.    Sound waves are part of the electromagnetic spectrum.
                                               true    false
24.    Light waves, water waves, microwaves and the ‘Mexican wave’ are all examples of ____________
        waves.
                             electromagnetic      transverse     longitudinal

 Use the “The electromagnetic spectrum: bounce quiz” at the eChalk website to help you answer these questions.

                                                             Worksheet to complement eChalk resource:
                                                           “The electromagnetic spectrum: Bounce quiz”
                                                                                http://www.eChalk.co.uk


                    The electromagnetic spectrum
16.   These rays have the shortest wavelength of all. They are emitted by some radioactive substances.
       They are often used in radiotherapy to kill cancer cells.
                        gamma rays        ultraviolet     infrared      microwaves

17.   Waves with a high frequency have a _________ wavelength