Show:
Simple Machines
Waves
Magnetism and Electricity
Force and Motion
Work and Energy
100
a bar that rests on a support called a fulcrum which lifts or moves loads.
What is a lever
100
a type of wave used for cell phone signals
What is a microwave
100
made up of protons, neutrons, and electrons
What is an atom
100
formula for mechanical advantage
work output/work input
100
measurement for energy
What is a joule
200
a simple machine that uses grooved wheels and a rope to raise, lower or move a load.
What is a pulley
200
they can give you a sunburn
What are UV rays
200
alike charges...
repel
200
formula for mechanical efficiency
output force/input force X 100
200
formula for work
W=Fd
300
an object with at least one slanting side ending in a sharp edge, which cuts material apart.
What is a wedge
300
can treat cancer
What is a Gamma Ray
300
unlike charges...
attract
300
the opposition of the atmosphere to forward movement
What is air resistance
300
energy of an object that is moving
What is kinetic energy
400
A wheel with a rod, called an axle, through its center lifts or moves loads.
What is a wheel and axel
400
used to see through things
What is an X Ray
400
easy for electricity to move through
What is a conductor
400
the velocity at which a falling body moves through a medium
What is terminal velocity
400
energy of a non-moving object
What is potential energy
500
an inclined plane wrapped around a pole which holds things together or lifts materials.
What is a screw
500
allows us to see color
What is visible light
500
hard for electricity to move through
What is insulator
500
activity in which one exerts energy to do something
What is work
500
A free-falling object has an acceleration of __________
9.8 m/s/s