______________________ are the most basic machines. They do work with ONE movement.
What are simple machines?
100
A _____ is a bar that can turn around a fixed point.
What is a lever?
100
Three types of simple machines in the inclined plane family.
What is a inclined plane, wedge, screw?
100
________ is the ability to do work.
What is energy?
100
Define Potential energy.
What is stored energy.
200
______________ are machines made up of two or more simple machines working together.
What are compound machines?
200
The fixed point a lever turns around is called the _____.
What is the fulcrum?
200
a _____ is two inclined planes jointed together. It moves when it is used. It is like pushing a ramp instead of pushing an object up a ramp. (ex: an axe)
What is a wedge?
200
Name the two types of energy.
What are Kinetic and Potential.
200
A stretched rubber band has __________ energy.
What is potential?
300
You can tell work has been done because an object ________.
What is moves?
300
A _____ is a wheel with a rope or belt tied around it. They are modified levers.
What is a pulley?
300
A _____ is an inclined plane that is wrapped around a cylinder. (ex: jar lid)
What is a screw?
300
give a definition for Kinetic energy.
What is energy of a moving object?
300
If an object is raised above the earth, it is given ____________ potential energy.
What is gravitational?
400
Machines make work easier by allowing us to apply less ________.
What is force?
400
A ____________ is a lever or pulley that is connected to a shaft.
What is a wheel and axle?
400
A ramp helps you do work because when you push an object up a ramp it helps to ________________________.
What is lift the object?
400
Heat energy is produced by ___________ particles.
What is vibrating?
400
Chemical energy is stored in the bonds of ______ and _________.
What are atoms and molecules?
500
The same amount of work can be done either with greater (bigger) forces over ________ distances or lesser (smaller) forces over ________ distances.
What are smaller and longer? (must be in the correct order)
500
A wheel and axle works because a small force is applied to the wheel and the force is ______ and applied to the axle.
What is multiplied?
500
Identify the two simple machines that work together to make a wheel barrow.
What are the lever / wheel and axle?
500
Give two examples of radiant energy.
What is x-ray and sunlight and light from a lamp ...
500
Nuclear energy is stored in the center of _____. It is released when the atom is ____________.