Energy• Ability to do work
• Can not be created or destroyed
• Can be transformed from one form to another
What is Mechanical Energy?
o Energy due to a object’s motion
(kinetic) or position (potential).
The bowling ball has mechanical energy.
When the ball strikes the pins, mechanical energy is transferred
to the pins!
What is Thermal Energy?o Heat energy
o Measured by heat
o The heat energy of an object determines how
active its molecules are.
A hot object is one whose atoms and molecules are excited and show rapid
movement.
A cooler object's molecules and atoms will show less
movement.
What is Electrical Energy?o Energy flowing
through an electric circuit
o Energy caused by the movement of electrons
o Easily transported through power lines and converted into
other forms of energy
Sound energy • Energy in which you can hear and
that travels in vibrating waves through the air. It's the energy present in a sound wave.
QUIZ TIME!Electrical energy is transported to your house through power lines.
When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy?
MECHANICAL ENERGY
What forms of energy can you identify in this picture?
How is energy being used?
Light energy- used for decoration and lightMechanical energy- used to move the parts of the ridesSound energy- used to produce the music and other sounds we hear
What forms of energy can you identify in this picture?
How is energy being used?
Solar energy- used to create electricity for the home. Solar energy can also be used to heat water for homes.
What forms of energy can you identify in this picture?
How is energy being used?
Wind energy- used to generate electricityMechanical energy- used to assist in moving the bladesSolar energy- used by plants to make food
What forms of energy can you identify in this picture?
How is energy being used?
Mechanical energy- The cranes use mechanical energy to move.Thermal Energy- Many factories use heat to produce steam to drive machines.Light Energy: refraction from the clouds; reflection on the water
What forms of energy can you identify in this picture?
How is energy being used?
Heat energy- used to warm the EarthSolar energy (Light energy) - used by plants to make food
Energy Transfer
Chemical
Electrical
Electrical
Electrical
Sound(mechanical)
Light(Electromagnetic)
ThermalMechanical