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| Question | Answer |
| Module 5.1 Energy around you | By Rahma Abdelgadir |
| What is energy? | The ability to make a change happen |
| What are the forms of energy? | 1. Kinetic energy 2. Heat energy 3. Light energy 4. Sound Energy 5. Electrical energy |
| What is kinetic energy? |
The energy of movement
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| Example of kinetic energy |
Dancing
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| What is heat energy? | A measure of the total kinetic energy possessed by particles in a substance. |
| Where does heat energy come from? | 1. Sun 2. Flame 3. chemical reactions 4. Electrical devices |
| What is the result of heat energy? | 1.Heat warms 2. Burns 3. Melts |
| What is light energy? |
Energy that is visible
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| Where does light energy come from? | 1. Sun 2. Light globes 3. Fires 4. Glow-worms |
| Example of light energy |
Light
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| What is sound energy? |
Energy that travels as vibrating waves and can be heard by our ears as sound.
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| Where does sound energy come from? | 1. Voices 2. Cars 3. Power tools |
| Example of sound energy |
Musical instruments
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| What is electrical energy? |
Energy form that causes charged particles to move.
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| Where is electrical energy produced from? | 1. Power stations 2. Solar cells 3. Batteries 4. Lighting |
| What does electrical energy power? | 1. Tv 2. Phone 3. Toaster 4. Microwave |
| Example of electrical energy |
Ipod
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| What is stored energy? | The amount of energy an object has due to its position in space. |
| What is potential energy? | Stored energy possessed by an object |
| What is photosynthesis? |
The process in which green plants convert light energy into chemical energy.
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| What are the forms of potential energy? | 1. Chemical energy 2. Gravitational potential energy 3. Elastic potential energy 4. Nuclear energy |
| What is gravitational potential energy? | Energy stored in an object when its above the ground. |
| Example of gravitational potential energy |
Water slide
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| What is chemical energy? |
Energy stored in substances
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| How does chemical energy release? | When you, 1. Digest food 2. Cars fuel is burned |
| What contains chemical energy? | 1. Wood 2. Paper 3. Apples 4. Petrol 5. Batteries |
| What is elastic potential energy? |
Energy stored in a stretched or squashed spring.
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| Example of elastic potential energy | Bungee jumping |
| What is nuclear energy? |
Energy form stored inside the tiny atoms that make up matter.
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| What releases nuclear energy? | 1. Nuclear power plant 2. Nuclear bomb |
| Example of nuclear energy |
Nuclear power plant
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| What is energy transfer? | The flow of energy from one object to another. |
| Example of energy transfer |
When you kick a ball, the kinetic energy from your foot is transferred to the ball causing it to move.
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| What is heat energy? |
A measure of the total kinetic energy possessed by particles in a substance.
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| What are the ways heat energy is transferred? | Though, 1. Conduction 2. Convection 3. Radiation |
| What is conduction? | Heat transfer between two objects in contact |
| Example of conduction |
Heat transfer from hot soup to you.
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| What is convection? |
The transfer of heat in a liquid or gas.
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| Example of convection | Spreads heat from ducted heating vents though the rooms of a house. |
| What is radiation? | Heat transfer as a wave which can travel though the vacuum of space. |
| Example of radiation |
The heat of the Sun when outside.
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| What is energy transformation? | The conversion of one type of energy into another type of energy. |
| What is a energy flow diagram? | A diagram using arrows that shows the way energy is passed on or changed into other forms. |
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What is the law of conservation of energy?
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States that energy can never be created or destroyed. Instead the energy is kept as its converted from one form to another. |
| Meaning that: | 1. Energy might be passed on or wasted, but its never lost. 2. If one object wastes energy, then its always gained by another object. |
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