Systems and Energy Transfers

Systems and Energy Transfers
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Slide 1: Slide
PhysicsLower Secondary (Key Stage 3)

This lesson contains 25 slides, with interactive quizzes and text slides.

Items in this lesson

Systems and Energy Transfers

Slide 1 - Slide

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Learning Objectives
  • Understand what a system is and the concept of a closed system
  • Identify different types of energy stores
  • Comprehend how energy is transferred between stores and surroundings

Slide 2 - Slide

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What do you already know about energy transfers?

Slide 3 - Mind map

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Definition of a System
  • A system is a group of objects where energy changes occur
  • Energy can be stored in various forms such as kinetic, gravitational potential, thermal, etc.

Slide 4 - Slide

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Concept of a Closed System
  • A closed system is one where no energy can escape to or enter from the surroundings
  • Total energy of a closed system remains constant

Slide 5 - Slide

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Types of Energy Stores
  • Kinetic
  • Gravitational potential
  • Elastic potential
  • Thermal
  • Chemical
  • Nuclear
  • Magnetic
  • Electrostatic

Slide 6 - Slide

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What type of energy store is present in a stretched rubber band?
A
Sound energy
B
Light energy
C
Magnetic energy
D
Elastic potential energy

Slide 7 - Quiz

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What is the energy store when a person climbs up a ladder?
A
Kinetic energy
B
Nuclear energy
C
Gravitational potential energy
D
Thermal energy

Slide 8 - Quiz

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Which of the following is an example of a kinetic energy store?
A
Sleeping person
B
Stationary rock
C
Moving car
D
Still water

Slide 9 - Quiz

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Which energy store is involved when a battery is charged?
A
Nuclear energy
B
Gravitational energy
C
Chemical energy
D
Elastic energy

Slide 10 - Quiz

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What is the name of the energy store when a car is moving?
A
Thermal energy
B
Potential energy
C
Chemical energy
D
Kinetic energy

Slide 11 - Quiz

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Which of the following is an example of a gravitational potential energy store?
A
Blown balloon
B
Melting ice cube
C
Growing plant
D
Elevated water

Slide 12 - Quiz

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Which of the following is an example of a thermal energy store?
A
A candle
B
Charging phone
C
Running car engine
D
Boiling water

Slide 13 - Quiz

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In what energy store is the food we eat transformed into?
A
Nuclear energy
B
Electrical energy
C
Kinetic energy
D
Chemical energy

Slide 14 - Quiz

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Which of the following is an example of an elastic potential energy store?
A
Glass bottle
B
Metal spoon
C
Stretched rubber band
D
Magnet

Slide 15 - Quiz

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Which of the following is an example of a chemical energy store?
A
Wind turbines
B
Solar panels
C
Nuclear power
D
Batteries

Slide 16 - Quiz

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Modes of Energy Transfers
  • Heating
  • Waves
  • Electricity
  • Forces

Slide 17 - Slide

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Which energy transfer occurs when a wind turbine converts wind into electricity?
A
Heating
B
Mechanical work (Forces)
C
Electrical current
D
Waves

Slide 18 - Quiz

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What type of energy transfer is involved when a battery powers an electronic device?
A
Electrical current
B
Mechanical work (Forces)
C
Heating
D
Waves

Slide 19 - Quiz

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What form of energy transfer occurs when a kettle heats water?
A
Mechanical work (forces)
B
Waves
C
Electrical current
D
Heating

Slide 20 - Quiz

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Which type of energy transfer takes place when a light bulb emits light?
A
Heating
B
Waves
C
Mechanical work (forces)
D
Electrical current

Slide 21 - Quiz

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Summary
  • A system is a group of objects where energy changes occur
  • A closed system does not allow energy to escape or enter
  • Energy can be stored in various forms
  • Energy can be transferred through heating, waves, electricity, and forces

Slide 22 - Slide

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Write down 3 things you learned in this lesson.

Slide 23 - Open question

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.
Write down 2 things you want to know more about.

Slide 24 - Open question

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.
Ask 1 question about something you haven't quite understood yet.

Slide 25 - Open question

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.