Forms of Energy
What is the SI unit of energy?
Joule
What is energy transformation?
The process of changing energy from one form to another
Energy can be created and destroyed. It just can be converted from one form of energy to another
False
Word 1
Kinetic energy
What is energy?
The ability to do work
Give an example of energy transformation in daily life.
Electrical energy is transformed into light energy and heat energy in the torchlight.
Gravitational potential energy is the energy stored in an object due to its condition, such as stretched, compressed, or bent.
False
Word 2
gravitational potential Energy
Mention minimum five forms of energy.
chemical potential energy, gravitational potential energy, kinetic energy, elastic potential energy, electrical energy
Explain the energy transformation in photosynthesis.
The light energy is transformed into chemical potential energy in a form of glucose.
Fuels, batteries and food are examples of chemical potential energy
True
Word 3
Work Done
1. The energy that is possessed due to a motion.
2. Give an example in daily life based on your answer in (1)
1. Kinetic energy
2. A person is running at a speed of 20 m/s
Explain the energy transformation involving geothermal.
The heat energy from the earth is used to steam up water and turn the turbine to produce electricity
Mechanical energy is the sum of kinetic energy and gravitational potential energy
True
Word 4
Nuclear Energy