1) Which statement is true about the 'normal'? a) It is drawn as a solid line. b) It is drawn at 45º c) It is drawn at right angles to a boundary d) It has an arrow on it 2) Which statement below is true? a) The angle of incidence is bigger than the angle of reflection b) The angle of incidence is equal to the angle of reflection c) The angle of incidence is smaller than the angle of reflection d) The angle of incidence is half the angle of reflection 3) Refraction happens because..... a) light bounces off a surface b) light speeds up as it travel through glass c) light is absorbed by a substance d) light slows down with it travels through glass 4) White light splitting into different colours is called... a) reflection b) dispersion c) refraction d) absorption 5) What is the order of the colours of the spectrum? a) ROYGBIV b) RYOBGIV c) ROYBIGV d) ROBGYIV 6) Which of these objects is transparent? a) Wood b) Plastic c) Tracing paper d) Glass 7) Which of these objects is opaque? a) Light bulb b) Bathroom window c) Book d) Plastic wallet 8) Which of these is luminous? a) Moon b) Star c) Table d) Book 9) Which of these is non-luminous? a) Moon b) Sun c) Lamp d) Candle 10) What is the speed of light? a) 300 m/s b) 3 000 m/s c) 300 000 m/s d) 300 000 000 m/s

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