Work & Power
A simple machine does not change the _________ of work done, but makes the work ____________
What is amount and easier?
This is the sum of a system's kinetic and potential energy
What is mechanical energy?
A simple machine that uses a grooved wheel and rope to change the direction of force
What is a pulley?
The energy an object has due to its motion
What is kinetic energy?
A light bulb turns electrical energy into this kind of energy
What is radiant energy?
Name two ways that a simple machine makes work easier
What is changing the size of a force?
What is changing the direction of a force?
What is changing the distance over which a force is applied?
A thermometer measures this kind of energy
What is thermal energy?
A simple machine that is an inclined plane wrapped around a cylinder
What is a screw?
How fast work is done
What is power?
Your body uses this kind of energy from your food and turns it into mechanical energy
What is chemical energy?
Two students do the same amount of work lifting boxes, but one finishes faster. The student who finished faster has more ___________.
What is power?
What is sound energy?
An axe is an example of what type of simple machine
What is a wedge?
The ability to do work
What is energy?
A windmill turns wind into this type of energy.
What is electrical energy?
A student carries a backpack across the room, however, they have not done work because this criteria of work was not met
What is the force is in the same direction of the motion of the object?
Energy associated with moving charged particles
What is electrical energy?
A simple machine that has a bar that moves around a fixed point
What is a lever?
The transfer of energy that occurs when a force moves an object a distance
What is work?
A toaster turns this kind of energy into this kind of energy.
What is electrical energy into thermal energy?
Pushing on a wall, though strenuous, is not considered work because this criteria for work was not metThese two words should always be a part of your hypothesis.
What is causing the object to move?
The sun and X-rays use this type of energy.
What is electromagnetic energy?
A broom is an example of what class of lever?
What is class C?
The number that tells how much a machine multiplies force
What is mechanical advantage?
This kind of energy is given off in every energy transfer.
What is thermal energy?