You have 1 minute to brainstorm What is energy?

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system What is energy? Key ideas: Energy comes in forms. These can either be stores (i.e. places where energy is kept) or transfers (where energy is moved) Energy is a number, we can do calculations about energy

The nature of energy

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system What is energy? Key ideas: Energy comes in forms. These can either be stores (i.e. places where energy is kept) or transfers (where energy is moved) Energy is a number, we can do calculations about energy

Gravitational Potential Sound Light Chemical Elastic Gravitational Potential Electrical Heat Kinetic Nuclear

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system Energy transfer Energy can be changed from one form to another. For example: Gravitational energy in a ball is converted to kinetic energy when it falls to the ground. Where else does the energy go?

Energy Tranformations Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system Energy Tranformations Energy cannot be made or destroyed, only transformed into different types. EXAMPLE A candle transfers chemical energy into light and heat energy. Chemical Energy  Light Energy + Heat Energy

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system Moving Energy Think of an example of an device (mechanical or electrical) you have used this morning. Can you identify… What the device is Whether it is mechanical or electrical What type of energy was input What type(s) of energy was output Finished? Try 1) A steam train 2) Your body

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system Stores and Transfers Thermal Elastic Gravitational Kinetic Chemical Nuclear Sound Electrical Light Energy Stores Energy transfers

Select the relevant energy stores at the start and the end of each process. A ball being thrown vertically upwards Store at the beginning Store(s) at the end 11

Select the relevant energy stores at the start and the end of each process. Cyclist accelerating Store at the beginning Store(s) at the end 12

By the end of this lesson you should… Learning Objectives By the end of this lesson you should… Be able to state the nine stores and transfers of energy Be able to identify the energy transfers taking place in a system Be able to identify the wasted forms of energy in a system Conservation of Energy Can you explain what the law of conservation of energy means. Can you explain how energy is conserved when walking up the stairs.