Embedded Files
Introduction
Introduction
Energy is a really important idea in science. It lets us calculate what it is possible and helps us explain all kinds of processes. Let's find out more:
Task 1: Know
Task 1: Know
Task 1: Use look, cover, write check to learn the answers to the core questions and the keywords for this topic.
Learn
Learn
Task 2: Energy stores
Task 2: Energy stores
Task 2b: Make notes that:
Define energy
Name the unit for energy
Give the rules regarding energy
List the energy stores and give a description for each one
Draw an energy transfer diagram for a tennis ball being dropped
Explain why the tennis ball does not bounce back up to the same height it was dropped from
Describe what happens to wasted energy
Task 2c: Watch the video and draw an energy transfer diagram for the plane taking off.
Task 3: Shifting energy
Task 3: Shifting energy
Task 3c: Make notes that:
Describe what you saw happening in the video
Identify the energy stores at the beginning and the end
Categorise energy transfers into useful and wasted
Task 3d: Complete the exam questions and mark your answers
Task 4: Conservation of energy
Task 4: Conservation of energy
Task 4c: Make notes that:
Define the conservation of energy
A log burner transfers 3500J into heat in the lounge. To do so it burns wood containing 6000J of chemical energy.
Work out how much energy is wasted.
Where did it go?
(click the arrow to check your answers)
1. 6000 - 3500 = 2500J
2. The wasted energy is used to heat up the log burner and some will be transferred to the surroundings as heat.
Task 4d: Watch the video (start at 1 minute) and name the energy stores full at these 3 stages:
Before the jump
When the slack has been taken up (rope not stretched)
At the bottom of the fall (rope at max stretch)
Task 5: Bouncing Balls
Task 5: Bouncing Balls
Task 5b: Make notes that:
List the factors that could affect how high a ball bounces when dropped
Task 5c: We are going to do an experiment to see how changing the surface we drop the ball on changes how high it bounces. Answer the following:
State a hypothesis for this experiment.
Justify this hypothesis using ideas about energy.
State the independent variable.
State the dependent variable.
List the control variables.
Task 5d: (OPTIONAL) IF you have a ball to drop and different surfaces, conduct the experiment and record your results in a results table. Answer the following:
Identify any errors or anomalies.
Calculate the mean height for each surface
Describe what type of data we have
Name the appropriate type of graph to draw
Draw a suitable graph
State if you got the same pattern as other groups. ‘My results showed…’ ‘This agreed/disagreed with other groups because…’
Describe what you can see from your graph. ‘My graph shows…’
Justify your description using the data you have collected. ‘For example, the ball bounced … on the …’
State if the results support your hypothesis. ‘My hypothesis said that… My results showed… So my hypothesis was …’
Explain the results using your knowledge from this topic. ‘My results were like this because…’
Task 6: Summary
Task 6: Summary
Task 6a: Watch the video
Task 6b: Complete the seneca learning unit:
Task 6c: Make a mind map or single page revision summary of this topic and add it to your revision folder.
Task 7: Check
Task 7: Check
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