Energy and change and systems and control

Define what a ‘fuel’ is. 

• gasoline
• Substances that burn. 
• stored energy
• Energy that is stored in something.

Which type out energy such as heat and light energy, that is produced when fuel burns.

• input
• stored
• output
• fuel

What is kinetic energy?

• The parts of a torch that carry electricity are joined together in a loop that begins and ends at the battery. 
• This energy is obtained from the sun. 
• In South Africa, most of our energy is made using this non- renewable resource. 
• The energy in a moving object. 

Name three things that a
fire needs to start burning. 

• heat, fuel and minerals
• food, oxygen and heat
• soil; heat and bedrock
• oxygen; fuel and heat 

What is a hypothesis?

• is an idea or explanation that you try to prove.
• It's a large water animal.
• A fairytale about hippos
• The format you write a friendly letter.

What is a battery? 

• Electricity is generated here by burning coal. 
• A source of stored energy 
•     Controls the electricity in an electric circuit 
• Changes the energy in chemicals into electricity. 

What is an  electrochemical cell?

• A path for the transfer of energy 
• It sends it to the plugs where you are able to use it. 
• Changes the energy in chemicals into electricity. 
• This energy is obtained from the sun. 

What is an electrical circuit?

• A path for the transfer of energy 
• Controls the electricity in an electric circuit 
• The parts of a torch that carry electricity are joined together in a loop that begins and ends at the battery. 
• A path for the transfer of energy 

Which type of energy do we need to start a fuel burning?

• Input
• Fuel
• Output
• Stored

Parraffin is a ____________ fuel.

• dangerous
• liquid
• solid
• gas