Vocabulary
The flow of electric charge through a conductor
electricity
_______ is energy that is stored within something.
Potential energy
________ is the energy of something in motion
Kinetic energy
(mass x velocity2)/2 or 1/2 mv2
What is the formula for how much kinetic energy an object has
Oil, Coal, and natural gas are examples of _____ resources
nonrenewable
A bicyclist pedaling up a hill
kinetic
Energy is needed for something to do _____.
work
What is the potential energy of a 3 kilogram-ball that is on the ground?
0 joules
If a ball is rolling at 1 ft. per second and it is 2 pounds. What is the Kinetic energy?
2 joules
weight x height
What is the formula for gravitational potential energy
Hydropower, solar energy, and wind are examples of ____
renewable resources
Volleyball player spiking a ball
kinetic
Energy that is stored in the height of objects
Gravitational Energy
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N. Calculate potential energy.
252 joules
What is the kinetic energy of a 3 Kg ball rolling 2 m/s?
KE = 6 joules
the unit for measuring energy
what is joules
Lightbulbs, toasters, batteries, and lightning are examples of ___ energy
electrical
An archer with his bow drawn
potential
__________ states that energy can never be created or destroyed, but it can be transferred through force.
The Law of Conservation of Energy
A cinder block is sitting on a platform 20 m high. It weighs 79 N. Calculate potential energy.
1580 joules
Jalen Brunson is running at a speed of 10 m/s and weights 200 lbs. Calculate his kinetic energy.
10,000 joules
When an object’s mass doubles, its kinetic energy _______
doubles
The stove, fireplace, toaster, and microwave are examples of ____ energy.
heat
A bowling ball sitting on the rack
potential