Types
When the nucleus of an atom splits
What is nuclear energy?
Find the GPE of a rock that is 3 kg and 5 m above the ground when g is 9.8 m/s/s.
GPE = ? GPE = (3 kg) (9.8 mm/s/s) (5 m) GPE = 147 J
m = 3 kg
g = 9.8 m/s/s
h = 5 m
Wind
What is a renewable resource?
A solar cell converts sunlight into _______ energy.
What is electrical energy?
___________ is 100% energy efficient because of ____________.
What is nothing and friction?
KE depends on mass and ___________
What is velocity?
Find the GPE of a 62 kg person hanging from a tree that is 12.4 m high.
GPE = ? GPE = (62 kg) (9.8 mm/s/s) (12.4 m) GPE = 7534.24 J
m = 62 kg
g = 9.8 m/s/s
h = 12.4 m
Fossil fuels
What are non-renewable resources?
When something falls, this energy transformation occurs.
What is potential into kinetic energy?
The law that states that energy cannot be created nor destroyed, only transformed from one type to another.
What is the law of conservation of energy?
Energy that you burn
Find the KE of a 0.14 kg baseball that is thrown at 40 m/s.
KE = ? KE = (1/2) (0.14 kg) (40 m/s)^2 GPE = 112 J
m = 0.14 kg KE = (0.5) (0.14) (1600)
v= 40 m/s
A nuclear power plant
What is a non-renewable resource?
The transformation that occurs when you rub your hands together.
What is mechanical energy to thermal energy?
LEDs are more energy efficient than old lightbulbs because they give off more _______ and no _________.
What is light and thermal energy?
What is electromagnetic energy?
If the total energy of a football is 680 J when it is in the quarterbacks hands, the total energy of the football when it reaches the receiver is ____________.
What is 680 J?
A hydroelectric power plant
What is a renewable resource?
When a gas fireplace is turned on to heat up a room.
What is chemical energy into thermal energy?
All energy on the planet comes from this source.
What is nuclear energy from the sun?