Forms and uses of energy VII SPH
Forms and uses of energy
VII SPH
1. Energy is the ability to do work.
2. Non living system also need energy to function : car and aeroplanes need fuel to provide them with
energy to move
3. Potential energy is stored energy due to a body's position or condition ex: arrow pulled,
spring pressed.
4. Example of potential energy:
a. Chemical potential energy : energy stored in fuels such as petrol and food that can be released
through chemical reaction
b. Gravitational potential energy: energi that an object has because of its position or location.
When the object is in a higher position with respect
to the ground, it has more gravitational potential energy than in a lower position.
c. Elastic potential energy: energy that an object has when it is stretched or compressed.
Ex: arrow pulled, spring pressed
5. Kinetic energy is the energy that a body has due to its motion. All moving object have kinetic energy.
Ex: a girl walking down the street, a car speeding down the road.
6. Heat is the energy that flows from a region or higher temperature to one of lower temperature.
Heat flows from things that are hot. Heat is used in homes for cooking, heating water,
ironing clothes. In factories, heat is needed for procrsses like melting metals,
creating steam to turn turbines and making chemical reacts.
7. Light is the energy that enables us to see.
8. Sound is the energy produced when objects vibrate.
9. Sound allow us to communicate and enjoy music, and used as a warning.
Ex: when a fire breaks out
10. Electricity/ electrical energy is the energy that results from the flow of charges particle.
11. Electricity is a useful from of energy that can be transformed into many other forms of energy.
12. Energy transformation:
a. Light energy > chemical potential energy : photosynthesis in plants
b. Elactic potential energy > kinetic energy : an archer releasing his bow
c. Chemical potential energy >kinetic energy + sound energy + light energy + hear energy : a moving car
13. Electrical generators are used to convert kinetic energy to electricity
VII SPH
1. Energy is the ability to do work.
2. Non living system also need energy to function : car and aeroplanes need fuel to provide them with
energy to move
3. Potential energy is stored energy due to a body's position or condition ex: arrow pulled,
spring pressed.
4. Example of potential energy:
a. Chemical potential energy : energy stored in fuels such as petrol and food that can be released
through chemical reaction
b. Gravitational potential energy: energi that an object has because of its position or location.
When the object is in a higher position with respect
to the ground, it has more gravitational potential energy than in a lower position.
c. Elastic potential energy: energy that an object has when it is stretched or compressed.
Ex: arrow pulled, spring pressed
5. Kinetic energy is the energy that a body has due to its motion. All moving object have kinetic energy.
Ex: a girl walking down the street, a car speeding down the road.
6. Heat is the energy that flows from a region or higher temperature to one of lower temperature.
Heat flows from things that are hot. Heat is used in homes for cooking, heating water,
ironing clothes. In factories, heat is needed for procrsses like melting metals,
creating steam to turn turbines and making chemical reacts.
7. Light is the energy that enables us to see.
8. Sound is the energy produced when objects vibrate.
9. Sound allow us to communicate and enjoy music, and used as a warning.
Ex: when a fire breaks out
10. Electricity/ electrical energy is the energy that results from the flow of charges particle.
11. Electricity is a useful from of energy that can be transformed into many other forms of energy.
12. Energy transformation:
a. Light energy > chemical potential energy : photosynthesis in plants
b. Elactic potential energy > kinetic energy : an archer releasing his bow
c. Chemical potential energy >kinetic energy + sound energy + light energy + hear energy : a moving car
13. Electrical generators are used to convert kinetic energy to electricity
Forms and uses of energy
VII SPH
1. Energy is the ability to do work.
2. Non living system also need energy to function : car and aeroplanes need fuel to provide them with
energy to move
3. Potential energy is stored energy due to a body's position or condition ex: arrow pulled,
spring pressed.
4. Example of potential energy:
a. Chemical potential energy : energy stored in fuels such as petrol and food that can be released
through chemical reaction
b. Gravitational potential energy: energi that an object has because of its position or location.
When the object is in a higher position with respect
to the ground, it has more gravitational potential energy than in a lower position.
c. Elastic potential energy: energy that an object has when it is stretched or compressed.
Ex: arrow pulled, spring pressed
5. Kinetic energy is the energy that a body has due to its motion. All moving object have kinetic energy.
Ex: a girl walking down the street, a car speeding down the road.
6. Heat is the energy that flows from a region or higher temperature to one of lower temperature.
Heat flows from things that are hot. Heat is used in homes for cooking, heating water,
ironing clothes. In factories, heat is needed for procrsses like melting metals,
creating steam to turn turbines and making chemical reacts.
7. Light is the energy that enables us to see.
8. Sound is the energy produced when objects vibrate.
9. Sound allow us to communicate and enjoy music, and used as a warning.
Ex: when a fire breaks out
10. Electricity/ electrical energy is the energy that results from the flow of charges particle.
11. Electricity is a useful from of energy that can be transformed into many other forms of energy.
12. Energy transformation:
a. Light energy > chemical potential energy : photosynthesis in plants
b. Elactic potential energy > kinetic energy : an archer releasing his bow
c. Chemical potential energy >kinetic energy + sound energy + light energy + hear energy : a moving car
13. Electrical generators are used to convert kinetic energy to electricity
VII SPH
1. Energy is the ability to do work.
2. Non living system also need energy to function : car and aeroplanes need fuel to provide them with
energy to move
3. Potential energy is stored energy due to a body's position or condition ex: arrow pulled,
spring pressed.
4. Example of potential energy:
a. Chemical potential energy : energy stored in fuels such as petrol and food that can be released
through chemical reaction
b. Gravitational potential energy: energi that an object has because of its position or location.
When the object is in a higher position with respect
to the ground, it has more gravitational potential energy than in a lower position.
c. Elastic potential energy: energy that an object has when it is stretched or compressed.
Ex: arrow pulled, spring pressed
5. Kinetic energy is the energy that a body has due to its motion. All moving object have kinetic energy.
Ex: a girl walking down the street, a car speeding down the road.
6. Heat is the energy that flows from a region or higher temperature to one of lower temperature.
Heat flows from things that are hot. Heat is used in homes for cooking, heating water,
ironing clothes. In factories, heat is needed for procrsses like melting metals,
creating steam to turn turbines and making chemical reacts.
7. Light is the energy that enables us to see.
8. Sound is the energy produced when objects vibrate.
9. Sound allow us to communicate and enjoy music, and used as a warning.
Ex: when a fire breaks out
10. Electricity/ electrical energy is the energy that results from the flow of charges particle.
11. Electricity is a useful from of energy that can be transformed into many other forms of energy.
12. Energy transformation:
a. Light energy > chemical potential energy : photosynthesis in plants
b. Elactic potential energy > kinetic energy : an archer releasing his bow
c. Chemical potential energy >kinetic energy + sound energy + light energy + hear energy : a moving car
13. Electrical generators are used to convert kinetic energy to electricity
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