FORMS OF ENERGY
Energy possessed by a moving object
What is kinetic energy?
a unit of measurement for energy
A light globe
What is an example of electrical to light energy
The ability to do work or heat something
What is energy?
A Heater receives 100J of Electrical energy and produces 50J of Heat energy. What is the efficiency of the Heater?
50%
Stored energy held by an object
The conversion of one type of energy into another type of energy
What is energy transformation?
Jumping on a trampoline
What is a an example of elastic > kinetic > gravitational
Heat transfer between two solid objects in contact. Particles vibrate to transfer heat.
What is conduction?
A Heater receives 230J of Electrical energy and produces 25J of Heat energy. What is the efficiency of the Heater?
10.9%
A form of energy that is visible, such as that produced by the Sun
What is light energy?
The flow of energy from one object into another object
What is energy transfer?
A bicycle rider (3 changes)
What is an example of Chemical (food) to Kinetic (moving leg) to Kinetic (pushing the bike)
The way heat energy reaches Earth
What is radiation?
A LIGHT GLOBE receives 200J of Electrical energy and produces 50J of Heat energy, 20J of Sound energy. How much light energy has it produced?
130J
Energy that travels as vibrating waves and can be heard by our ears as sound
a diagram using arrows that shows the way energy is passed on or changed into other forms
What is an energy flow diagram?
Hot tea heating a metal spoon (be specific)
What is an example of convection to conduction?
Material placed inside ceilings and between the walls of a house to
What is insulation?
A Torch runs at 70% efficiency and produces 120J of electrical energy. How much light energy is produced by the torch batteries?
84J
A measure of the total kinetic energy possessed by particles in a substance
What is heat energy?
energy cannot be created or destroyed, but can only be transferred from one object to another or transformed into another form of energy
What is the law of conservation of mass?
An air fryer that cooks by producing hot air.
What is an example of electrical to heat (convection)?
A measure of useful energy transformation
What is energy efficiency?
A LIGHT GLOBE produces 60J of Light energy and 46.7J of Heat energy. The light globe runs at 90% efficiency. If the light globe only produces light, heat and sound energy, how much sound energy is it producing?
20J