1) White light is made up of ... a) All the colour frequencies in the spectrum b) Black, White and Grey c) Sunlight 2) Light is a form of "......................". that we can see when its reflected off the surface of an object back into our eyes a) Movement b) Darkness c) Food d) Energy 3) Light travels in...  a) Transverse waves b) Longitudinal waves c) Mexican waves d) Ocean waves 4) Colours are...  a) Different wavelengths of light measured in meters (m) b) Different wavelengths of light measured in nanometers (nm) 5) All wavelengths of light are visible to humans a) True b) False 6) Which colour light has the highest frequency? a) Ultraviolet light b) Green light c) Blue light d) Red light 7) Radiation is... a) Energy that comes from a source and travels through space at the speed of light b) Waves that go to a source and travels through space at the speed of sound c) Particles that comes from a source and travels through tunnels at speed of light 8) Ionising means a) Splitting an atom to release energy b) Converting an atom or molecule into a charged atom (ion) by adding or removing electrons or protons c) Fusing an atom to release energy d) Adding an electron or protons to an atom to make it larger an more unstable 9) How do we used Gamma radiation? a) To change human into the incredible hulk b) To transmit television signals c) To see through bones d) To sterilise medical equipment and treat cancerous tumours 10) Microwaves are able to cook things by ... a) Vibrating air to heat up food b) Vibrating your phone to heat up your head c) Vibrating water molecules in food or other substances 11) Infrared radiation is emitted by what type of objects a) Any red coloured object b) Any object that is emitting thermal energy c) Wild animals 12) Light from celestial objects like stars and galaxies when moving AWAY from planet Earth are shifted towards what side of the EM spectrum? a) Left b) Right 13) Light waves from celestial objects moving TOWARDS planet Earth are shifted towards what side of the EM spectrum? a) Blue b) Red 14) Ionising radiation is most harmful to what part of the cell a) Cell membrane b) Mitochondria c) Nucleus 15) Ionising radiation is harmful because... a) It is stopped by solid materials from paper, skin, metals to concrete  b) It can penetrate solid materials from paper, skin, metals to concrete c) I can be stopped by DNA 16) Which statement is TRUE about the two graphs? a) The closer humans live to the equator, the more intense the UV rays and the darker their skin colour will be overtime b) The further humans live to the equator, the less intense the UV rays and the darker their skin colour will be overtime c) The closer humans live to the poles, the more intense the UV rays and the lighter their skin colour will be overtime 17) Which cells are sensitive to how intense or bright a light is?  a) Rod cells  b) Cone cells  18) Which cells are sensitive to different wave frequencies of light or colours? a) Cone cells b) Rod cells

Electromagnetic Spectrum (Quiz)

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