1) What substance helps to break food down whilst chewing? a) Bile b) Enzyme c) Saliva 2) Which teeth are used to rip and tear food? a) Canines b) Premolars c) Incisors 3) Finish the sentence: Friction acting on an object a) speeds it up. b) slows it down. 4) What are the 2 forces acting on a parachute when you jump from a plane? a) Friction and gravity b) Air resistance and gravity c) Air resistance and frition 5) What is the word used for 'rain' in the water cycle a) Precipitation b) Condensation c) Evaporation  6) When the sun heats up the water on land and turns it into vapor, this process is known as: a) Precipitation b) Evaporation c) Condensation 7) What are the names of the 3 tiny bones in you ear? a) Hammer, Anvil and Stirrup b) Hammer, Screw and bolt c) Hinge, Anvil and Screw 8) Which one of the tiny bones in you ear is actually the smallest bone in your body? a) Hammer b) Anvil c) Stirrup 9) True or false: Gravity is stronger on Jupiter than on Earth because Jupiter has a higher mass than Earth? a) True b) False 10) True or False: Friction creates heat a) True b) False

Science recap Y4

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