Energy
What are the two key categories of energy?
Kinetic and Potential
What is the definition of Kinetic energy?
Kinetic energy is the energy of motion
Potential energy is energy stored in an object
List 2 types of Potential energy
Gravitational & elastic
What two key factors determine how much GPE an object has?
Height and Mass
What is the definition of Gravitational potential energy?
It is the energy in an object that is held in a vertical position.
What is the definition for elastic potential energy
It is energy stored in objects that can be stretched or compressed.
List 3 examples of elastic energy
Answers may vary teachers discretion
Where does nuclear energy comes from?
Nuclear energy comes from the nucleus of atoms.
True or false? Uranium is a radioactive element that can be used to create power plants
True
How is electrical energy caused?
It is caused by moving electric charges called electrons. The faster the charges move, the more electrical energy they carry.
What form of energy is electrical energy?
Kinetic
What is chemical energy
Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules. This energy is released when a chemical reaction takes place.
List 5 examples of Chemical energy
Wood, coal, food, batteries, gas
List 8 forms of energy
Explain the difference between energy transfer and energy transformation using examples for each
Energy transfer is the movement of energy from one location to another. For example, when electricity moves from a wall plug, through a charger, to a battery.
Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.
Kate had 300 joules of of potential energy and she generated 350 joules of kinetic energy - is this possible explain your answer
What does the law of conservation state?
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.
When a arrow is released, list all the types of energy transformations that take place.
Chemical -> Elastic -> kinetic -> sound
List all the energy transformation that take place when a television is turned on.
Electrical -> sound -> light -> heat