1) What is the name given to the bouncing of light off of a surface? a) Reflection b) Refraction c) Diffraction d) Focal Length 2) What is the name given to light bending e.g. through a lens? a) Reflection b) Refraction c) Diffraction d) Focal Length 3) Sound is louder if.... a) ...it is further away b) ....it is closer c) ....it is under water d) ....it makes no difference, loudness never changes. 4) Ultrasound is... a) sound that is below the frequency of human hearing b) ....below the volume of human hearing. c) above the volume of human hearing. d) above the frequency of human hearing. 5) A convex lens is... a) a diverging lens b) a converging lens c) always made of glass d) thinner in the middle 6) A concave lens is a) thinner in the middle b) always made of glass c) used for magnifying d) a converging lens 7) Which part of the eye detects light? a) pupil b) lens c) retina d) cornea 8) Which parts bend the light a) retina, cornea b) lens, cornea c) pupil, retina 9) Which side of the brick is gives the highest pressure a) The one with the largest area b) The one with the smallest area c) none of them 10) Which combination makes the highest pressure a) Large force, Large Area b) Large Force, Small Area c) Small Force, High Area d) Small Force, Small Area 11) As we get deeper, the pressure increases a) True b) False 12) The longer the lever, the more it can increase the force. a) True b) False 13) If the 2 cylinders are of similar size, it can increase the force. a) True b) False 14) If the large cylinder has 200 x the area of the small. How much would a force of 2N be increased to? a) 2N b) 200N c) 100N d) 400N 15) Liquids and Gases can be compressed a) True b) False nut 16) How can the see-saw be balanced a) Girl moves closer to centre b) Boy moves closer to centre 17) How can the seesaw be balanced a) Add a weight to the boy's end b) Add a weight to the girl's end

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