Vocabulary Review 1
SI unit of energy
What is a Joule?
stored energy due to position
What is potential energy?
You convert kinetic energy into thermal energy when you rub two sticks together because of ____________.
What is friction?
The food you eat helps you run, jump, play, and move. This type of energy is
What is chemical?
Calculate work is being done in the problem below:
F = 200 Newtons
d = 50 meters
10,000 J
the ability to cause change
What is energy?
energy in the form of motion
What is kinetic energy?
A machine is a device that makes work ________.
What is easier?
form of energy emitted by fire
What is thermal?
The Kinetic Energy of a 150 kg object that is moving with a speed of 15 m/s.
What is 16,875 J
Energy cannot be created or destroyed
What is the Law of Conservation of Energy?
does work with only one movement of the machine
What is a simple machine?
The total energy of a system remains ________.
What is constant?
Solar panels placed on the roofs of homes use this form of energy to create electrical energy.
What is radiant (light)?
The Kinetic Energy of a 1200 kg object that is moving with a speed of 24 m/s.
345,600 J
energy stored by things that are above the earth
What is gravitational potential energy?
energy stored in chemical bonds
What is chemical potential energy?
The amount of work done depends on the amount of force exerted and the __________ over which the force is applied.
What is distance?
A radio produces this type of energy allowing music to be heard.
What is sound energy?
Calculate the GPE of a 5kg cat lifted 2m into the air.
98 J
the total amount of kinetic and potential energy
in a system
What is mechanical energy?
ratio of output work to input work
What is efficiency?
The number of times a machine multiplies the effort force is the _________________ of the machine.
What is the mechanical advantage?
A plug and outlet use this form of energy
What is electrical energy?
Calculate the GPE of a massively fat cat with a mass of 20kg lifted 8m into the air
What is 1,568 J?