Meldrum Academy Science Faculty S1 - Energy and Heat Learning Outcomes Energy Learning Outcomes State that energy can be changed from one form to another (Level C) Give examples of energy being changed (or converted ) from one form to another(Level C) State the energy change in a bell, lamp and buzzer. (Level C) State that the kinetic energy is the energy a body has as a result of its movement. (Level E) State that gravitational potential energy is a type of energy a body has due to its position above the Earth’s surface. (Level E) State that gravitational potential energy can be changed to kinetic energy and vice versa (Level E) Give examples of the conversion of gravitational potential energy to kinetic energy and kinetic energy to gravitational potential energy (Level E) State that chemical energy is a type of stored energy. (Level E) State that chemical energy is stored in batteries, food and fuels (Level E) Give examples of chemical changes. (Level E) State that gravitational potential energy of an object is related to the height of the object (Level F) State that the chemical energy of an object is due to its chemical composition. (Level F) Heat Learning Outcomes Heat is a form of energy and is measured in joules (level D) Temperature is a measure of the hotness of an object and is measured in degrees Celsius (level D) Adding heat to an object increases its temperature and losing heat leads to a drop in temperature (level D) Metals are good conductors of heat (level C) Heat flows from hot objects to cold objects (level E) Heat travels by conduction when the particles vibrate more and pass the energy from particle to particle (level E) Convection can happen in liquids or gases (fluids) In convection some particles rise transferring heat energy (level E) Good conductors allow heat to flow through them easily (level E) Poor conductors are called insulators (level E) Be able to give examples of good and poor conductors of heat (level E) Trapped air is a good insulator (level E) Heat energy can be transferred as radiation (level F) Heat is also called infrared radiation (level F) Dull black surfaces lose heat by radiation much faster than shiny, polished surfaces (level F) Possible Revision Work Create a “spider diagram” summary sheet. OR do the revision quiz below. Revision Quiz 1) Name 7 types of energy …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………… 2) Name 3 types of stored energy ………………………………………………………………………………………………...………………………………… ………………………………………………………………………………………………………….………………………… 3) Energy is measured in units called ………………………….. 4) Draw an energy transfer diagram for a battery powered torch. 5) What type of energy is stored in petrol? ………………………………………………………………………… 6) What is the main type of energy produced by a car? …………………………………………………………………………………………………………………………………… 7) What is the Law of Conservation of energy? ………………………………………………………………..……………………………………………………………… ……………………………….………………..……………………………………..……………………………………… ………………………………………………………………………………………………………….…………………… 8) Complete the Sankey Diagram below. Heat Revision Quiz Using Starting Science Book 1 1) Name 6 fuels (p. 102) _______________________ _______________________ _______________________ _______________________ _______________________ _______________________ 2) Our body gets energy from - (p103) ………………………………………………………………………………………………………………………………… 3) Energy in food is measured in kJ or k…………………………………….. (p103) 4) What determines your daily energy requirements? ( How much you need to eat each day) (p103) ……………………………………………………………………………………………… ……………………………………………………………………………………………… ……………………………………………………………………………………………… 5) What are the units used to measure HEAT energy? (p105) ………………………………………………………………………………………………………………………………… 6) What do we measure in units of degrees Celsius (P103)? ………………………………………………………………………………………………………………………………… 7) What do we mean by “Absolute Zero”? …………………………………………………………………………………………………………………………………... 8) Describe what happens when a solid melts. (P 107) ………………………………………………………………………………………………………………………………… 9) Describe how heat travels through a metal rod. (P108) ………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………… 10) What is a convection current? (P109) ………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………… 11)Explain how gliders stay up in the sky. ………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………… 12) How does the heat from the Sun reach us on Earth? ………………………………………………………………………………………………………………………………… 13) Name three good insulating materials. (P111) ………………………………………………………………………………………………………………………………… 14) What do most insulating materials have in common? (P111) ………………………………………………………………………………………………………………………………… 15) Describe three ways of reducing heat loss from your house. (P112) …………………………………………………………………………………………………… …………………………………………………………………………………………………… …………………………………………………………………………………………………… Complete this table showing the three methods of heat transfer. Method of heat transfer Material needed conduction fluids (liquids and gases) Key Words conduction Definition ___________________________________________________ ___________________________________________________ conductor ___________________________________________________ ___________________________________________________ conservation ___________________________________________________ ___________________________________________________ contraction ___________________________________________________ ___________________________________________________ convection ___________________________________________________ ___________________________________________________ Degrees Celsius evaporated ____________________________________________ ___________________________________________________ ___________________________________________________ expansion ___________________________________________________ ___________________________________________________ infrared ___________________________________________________ ___________________________________________________ insulator ___________________________________________________ ___________________________________________________ radiation ___________________________________________________ ___________________________________________________ temperature ___________________________________________________ ___________________________________________________ Thermometer ___________________________________________________ ___________________________________________________ transferred ___________________________________________________ ___________________________________________________ vacuum ___________________________________________________ ___________________________________________________