Forces & Gravity
Non-Renewable Energy
Renewable Energy
Energy Transformation
Uses of Energy
100
What is force?
Force is exerting a push or a pull on an object. 
100
True or False: Non-renewable energy sources cannot be replaced. 
True. 
100
What are some examples of renewable energy sources?
Sunlight, wind, flowing water, plant remains...
100
True or False: Energy cannot transform from one form to the other.
False
100
______________: Televisions, computers and refrigerators work with electrical energy. 
Appliances. 
200
True or False: Forces act only when there is contact. 
False. No contact can happen with magnets. 
200
Natural gas, petroleum and coal are _______ _______. Plutonium and Uranium are ______ _______. 
Fossil Fuels.

Nuclear Fuels. 

200
True or False: Today renewable energy sources are mainly used to produce products. 
False, electricity. 
200
_________energy from fuels transforms into mechanical energy in different vehicles. 
Chemical
200
Electrical energy is used for ___________ in homes and for street ___________. 
Lighting. 
300
What is gravity?
It is the force which attracts all objects towards the centre of the Earth. 
300
What are fossil fuels used for?
Fuels, plastic and other products. 
300
True or False: Sunlight and wind are used to move machines such as windmills, watermills and sawmills. 
False! To produce electricity!
300
________________ energy transforms into thermal energy in boilers and radiators. 
Chemical
300
__________: Most vehicles use energy from fuels and trains also use electrical energy. 
Transport. 
400
True or False: Forces cannot change the shape of objects. 
False!
400
What are two advantages of non-renewable sources?
They can be easily transported and stored. 
They are easy to use. 
400
What are some disadvantages of renewable energy sources?
They are not continually available. 
They are difficult to use directly. 
400
_________ energy transforms easily into other forms of energy, for example, light, mechanical and thermal energy. 
Electrical
400
______ and ______: Both electrical energy and energy from fuels are used. 
Industry and Farming. 
500
Name four different effects forces have on objects:
1. They can make objects change their shape

2. They can make objects break
3. They can make objects start moving
4. They can make objects stop moving

500
What are some disadvantages of non-renewable sources?
They will run out one day
They cause pollution
500
What are some advantages of renewable energy sources?
They will never run out. 
They cause less pollution. 
500
Name five types of electrical power plants. 
Thermal, wind farms, hydroelectric, solar power and nuclear. 
500
_____________ and _____________: Energy from fuels and electrical energy are used to change temperature. 
Heating and air conditioning. 
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