Potential Energy
Potential energy is also called _____________ energy.
stored
Kinetic energy is energy in _______________.
Motion
The law of conservation of energy states energy is ...
never created or destroyed
A snowboarder gains ________ energy as he rides the ski lift up the mountain?
PE
The splitting of an atom's nucleus
Very powerful
nuclear
Potential energy is dependent on what 2 factors
1. mass
2. height
Kinetic energy is dependent on what 2 factors
1. mass
2. speed
transferred or forms
As a skateboard rides down a hill he is gaining ____________ energy.
KE
A disturbance that causes a vibration/ wave to travel through the air
sound energy
Potential energy due to being stretched or compressed
Elastic
Kinetic energy due to the internal motion of atoms
Heat
The most common energy conversion is between _______ and _______.
PE and KE
Half down the first drop on a roller coaster how much PE and KE do you have?
50% PE
50% KE
Travels as a wave called a photon
light
Potential energy dependent on height
Gravitational
Kinetic energy due to moving parts like pedaling a bike
mechanical
How does a roller coaster demonstrate the law of conservation of energy?
energy is not created or destroyed it only changes from one form to another (PE to KE)
A rollercoaster changes from PE to KE but a roller coaster can also produce _________ and __________.
heat and sound
or mechanical
potential energy stored in the bonds between atoms
chemical
What has more PE a 1 lb apple 20 ft in a tree or a 2 lb apple 20 ft in a tree?
the 2 lb apple = more mass
What has more KE a 1 kg bus flying at 10 mph or a 2 kg bug flying at 5 mph?
same
How does a pendulum demonstrate the law of conservation of energy?
KE can never be more than PE
A firework changes from chemical PE to ______________, ________________, _______________.
heat light and sound
the internal motion of atoms
heat energy