Energy

Task 1 Ever-changing energy 1     From your practical investigations, produce a table of results listing what object you investigated, what energy it used and what that energy was transferred to. 2     For each of the appliances you looked at, draw a simple energy transfer diagram If you complete this task correctly, you will meet grading criterion P1. Task 2 – Energy Efficiency 3     Using work you have done in class, complete a table of energy efficiency calculations for at least 5 appliances or objects (e.g. filament bulb, energy efficient bulb, kettle, radio, computer) If you complete this task correctly, you will meet grading criterion P2.

Task 3 Energy conservation We can change energy from one form into others, but the total amount of energy stays the same. It is conserved. Unfortunately, not all the energy is transformed into the form we want. 1       a   Describe three examples of everyday processes in which one form of energy is transformed into at least two other forms.        b   Draw simple diagrams showing these energy transformations.        c   Explain what happens to each of the energy forms produced. Show which are useful energy, and which are wasted        d   Look up data for three everyday processes, to find the percentage of energy transformed into useful and waste energy in each. (Sankey diagrams) If you complete this task correctly, you will meet grading criterion M1.

Task 4 Conserving energy 1       a   Since energy cannot be destroyed nor used up, what do we mean by energy consumption ? 2       Household appliances are labelled with efficiency ratings, A to G.        a   What do we mean by energy efficiency? What do these ratings mean?  Give examples.        b   Explain the advantages of using appliances with higher energy efficiency. 3     List, with brief details, five ways that people can reduce their energy consumption, and/or use energy more efficiently in their everyday lives. If you complete this task correctly, you will meet grading criterion D1.