1) What is gravity? a) It is the force which attracts all objects towards the centre of the Earth b) It is the force that slows down a moving object 2) How do we calculate speed? a) We divide time by distance b) We divide distance by time 3) What is speed? a) It is how fast an object moves b) It is how distance is c) It is a force that slow down objects 4) What is friction a) It is how fast an object move b) It is the force that slows down a moving object c) It is a force that attracts all objects toward the centre of the Earth 5) What is energy? a) It is the capacity to work b) It is the power to work c) It is the capacity or power to do work 6) What are the main types of non-renewable energies? a) solar, eolic, coal and nuclear b) coal, nuclear, biomass and geothermal c) coal, petroleum, natural gas and nuclear 7) What are renewable energy sources? a) Energy sources that will run out one day b) Energy sources that never run out 8) What are the main types of renewable energy sources? a) biomass, solar, eolic, geothermal, hydraulic b) coal, petroleum, natural gas and nuclear c) solar, eolic, coal and biomass 9) How do objects change shape? a) They can change shape permanently or temporarily b) they can break c) they can change shape permanently, temporarily or break

y5 sc- Units 8&9

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