Year 9 Science · Unit 3 · Lesson 1

Introduction to Energy

Foundation Worksheet

Name

Date

Class

Learning Goals

Identify the main forms of energy and give an example of each
Distinguish between an energy transfer and an energy transformation
Explain why energy is important using evidence from real contexts

Warm Up

Recall 8 marks

Match each energy form to its example

Draw a line connecting each energy form on the left to its correct example on the right. Or write the matching letter in the "Your answer" column.

Energy form	Your answer	Example
Kinetic energy		A. Coal stored in the Latrobe Valley, Victoria
Gravitational potential energy		B. A didgeridoo being played at a cultural ceremony
Elastic potential energy		C. An AFL player sprinting across the MCG
Thermal energy		D. Lightning striking during a Darwin storm
Chemical energy		E. Sunlight hitting Bondi Beach
Electrical energy		F. Water held behind the Snowy Mountains dams
Light energy		G. A stretched rubber band before it is released
Sound energy		H. An outback road surface heated to 70°C in summer
Energy transfer		I. Heat moving from a hot camp fire to a billy can
Energy transformation		J. Chemical energy in a battery becoming electrical energy in a torch

Your Turn

Recall 8 marks

Fill the gap

Choose the correct word from the word bank to complete each sentence. Two words will not be used.

energy Joule kinetic potential transfer transformation conservation force power

The capacity to do work or cause change is called . Scientists measure it in the SI unit called the (J). Energy due to motion is called energy, while energy stored due to position or condition is called energy. When energy moves from one place to another without changing form, we call this an energy . When energy changes from one form into a different form, we call this an energy . The principle that energy can never be created or destroyed is called the law of of energy. Australia uses approximately 6,000 petajoules of every year.

Show What You Know

1. A toaster converts electrical energy into thermal energy to brown bread. Name the type of energy change happening and explain what it means.

Recall 2 marks

2. Identify TWO different forms of energy involved when an AFL player kicks a football. For each form, state where in the situation it is found.

Recall 2 marks

Wrap Up

In one sentence, what was the main idea of this lesson?