Energy, Work, and Simple Machines
The six types of simple machines are inclined planes, screws, wedges, levers, wheels and axles, and __________
Pulleys
Which does NOT occur in an internal combustion engine?
Most of the thermal energy is wasted
Thermal energy forces the piston downward
Thermal energy is converted into chemical energy
Thermal energy is converted into mechanical energy
Thermal energy is converted into chemical energy
What causes an object to remain in motion?
Inertia
A _________ ____________ occurs when energy is converted from one form to another
Energy Transformation
Why do hot air balloons rise?
Thermal Expansion
What would be the net force if one girl pushed with 115 N and another boy pushed in the same direction with 65 N
180 N
Which of the following is NOT a form of stored energy?
Chemical energy
Electric energy
Gravitational potential energy
Nuclear energy
Electric energy
A _________ __________ is a material through which thermal energy flows easily
Thermal Conductor
In circular motion, a force that acts perpendicular to the direction of motion toward the center of the curve is _______ _____
Centripetal Force
Energy carried by electromagnetic waves is ________ _____
Radiant Energy
A __________ __________ is a device that converts electric energy into thermal energy
Heating Appliance
___________ is a measure of how hard it is to stop a moving object
Momentum
As the temperature of an object increases, the particles have greater _____ ____
Kinetic Energy
What is the difference between thermal energy and heat?
Answers will vary
State Newton's Third Law of Motion
For every action in nature there will be an equal and opposite reaction