Energy Transformations
What is the law of conservation of energy
energy cannot be created or destroyed but it can be transformed
A basketball passing through the hoop
kinetic energy
A person climbing a ladder
kinetic energy
Blowing wind
kinetic energy
A dry cell of a battery
potential energy
A piece of celery
potential energy
A rock at the edge of a cliff
potential energy
An acorn hanging from an oak tree
potential energy
Gasoline
potential energy
What % of energy can be transformed when an energy transformation from potential to kinetic occurs
Less than 100
Which of the following choices are all forms of energy?
Light, electrical, mechanical, and heat
Chemical to heat
Match
Total amount of kinetic and potential energy in a system
Mechanical energy
A glass of milk
PE
Mechanical to sound
Speaker
The ability to cause change
Energy
What happens to energy as it is converted from one form to another?
All energy is transferred
Which of the following describes the energy transformation needed to light up the light bulb on the generator
Chemical potential to electric to mechanical to light
A tape player with batteries
Chemical to electric to motion to sound
An automobile (3)
Chemical to thermal to mechanical
A hot air ballon (4)
Chemical to thermal to motion to gps
eletric fan
Electric to Motion
A lamp
Electric to light
An iron
Electric to thermal
Electrical to mechanical
Fan
moving a skateboard
Ke
When a tennis ball bounces on the floor, which of the following best describes what happens to the height of the rebound bounce of the ball?
The ball comes back to some fraction of the height it was dropped from originally
Conduction
The direct transfer of heat from one substance to another substance that it is touching.
Which of the following is the best definition for potential energy
The energy is stored
Which of the following is the best definition for kinetic energy
The energy of movement
Why does an object slow down when you stop pushing it?
There are forces working opposite to the movement to slow it down
Where does most radiation come from
The sun, visible light
Convection
The transfer of heat by the movement of a fluid
Radiation
The transfer of heat energy ny electromagnetic radiation
What are energy transformations
When energy changes from one form to another
When is the energy of the rubber band inside the can completely stored energy
When the rubber band is wound and the object is stopped
Transfer of energy through motion
Work
