What is the main type of energy conversion that happens to a ball thrown in the air as it goes up?A.Kinetic energy to gravitational potential energyB.Kinetic energy to chemical potential energyC.Gravitational potential energy to kinetic energyD.Chemical potential energy to kinetic energy

You throw a ball straight up into the air. What kinds of energy are changing as it goes up?A.Nuclear energy and sound energyB.Light energy and gravitational potential energyC.Gravitational potential energy and kinetic energyD.Kinetic energy and elastic energy

When a basketball is held in the air, what type of energy does it have?a) Kinetic energyb) Potential energyc) Thermal energy

A basketball player holds a basketball, ready to jump and shoot the ball. The player jumps in the air and shoots the ball toward the basket. Which of the following energy transformations occurs to power the player's jump shot?Athermal energy to sound energyBlight energy to thermal energyCmechanical energy to electrical energyDchemical energy to kinetic energy

Which of the following is an example of potential mechanical energy?A rocket lifting off into spaceA base ball falling down to earthA book raised above your head A bowling ball rolling down the laneA running person

10 A ball is dropped on to a hard surface and bounces. It does not bounce all the way back to whereit started, so it has less gravitational potential energy than when it started.hard surfaceball droppedfrom hereball bouncesto hereWhat happens to the ‘lost’ energy?A It is converted into chemical and strain energy.B It is converted into internal (heat) energy and sound.C It is destroyed as the ball rises upwards after hitting the ground.D It is destroyed when the ball hits the ground.11 What does a barometer measure?A atmospheric densityB atmospheric pressureC liquid densityD liquid pressure12 In which position would a boy exert the most pressure on the ground?A lying on his backB sitting downC standing on one footD standing on two feet6© UCLES 2012 0625/12/M/J/1213 On a warm day, a swimmer climbs out of a swimming pool into the open air and water evaporatesfrom his skin.As the water evaporates, which molecules escape into the air first and what happens to theaverage speed of the remaining water molecules?first moleculesto escapeaverage speed of theremaining moleculesA least energetic decreasesB least energetic increasesC most energetic decreasesD most energetic increases14 Some air is trapped inside a metal can with a tightly fitting lid.airheattightly fitting lidmetal canWhen the can is heated strongly behind a safety screen, the lid is blown off by the increasedpressure inside the can.What causes the increase in pressure of the air inside the can?A The air molecules expand and take up more room.B The air molecules move more quickly.C The number of molecules inside the can increases.D The volume occupied by the molecules decreases.15 A solid object has a very large thermal capacity.What does this mean?A A large amount of energy is needed to make the object become hot.B A large amount of energy is needed to make the object melt.C A small amount of energy is needed to make the object become hot.D A small amount of energy is needed to make the object melt