Types of Energy
What type of energy is stored in a stretched rubber band?
Elastic Potential
What energy is transffered when I kick a ball with my foot?
Kinetic -> Kinetic
What energy transformation is happening when turning on a speaker?
Electrical -> Sound
What unit is energy measured in?
Joules (J)
True or False: Energy can be created
False - it is conserved
What energy is involved in moving objects?
Kinetic Energy
How can we convert Light energy into a renewable energy source?
Solar Panels
When dropping a ball from my hand, what is the energy transformation
Gravitational Potential -> Kinetic
What is the formula for Kinetic Energy
KE=½ mv2
What is the main source of energy for the Earth
The Sun
What is another name for heat energy?
Thermal Energy
What energy transformation occurs when charging you laptop with solar panels?
Light -> Electrical
What energy transformation is used in simple circuit turning on a light bulb?
Electrical -> Light
What is the formula for Gravitational Potential Energy?
GPE = mgh
In electrical energy, what directions do electrons flow?
Negative -> Positive
What energy is produced from vibrating objects?
Sound Energy
Why do machines get hot when used?
Some of the energy is transformed into heat energy
What energy transformation happens when using a toaster?
Electrical -> Heat
What does 'v2' represent?
Velocity Squared
What is moving in electrical energy?
Electrons
What energy travels in waves and can be seen?
Light Energy
Where does Australia get most of it's energy from?
Fossil fuels
What happens to kinetic energy when the potential energy increases?
Kinetic Energy decreases
If a 2kg object travels at 2m/s, what is the kinetic energy?
4 Joules
How long does it take for light from the sun to reach Earth?