Work It, Baby!
What do we call it when a force moves an object?
Work
Extra 100 points: Equation for work
Work=Force x Distance
What is a simple machine that uses a fulcrum point?
Lever
T/F: A compound machine is simply two or more simple machines combined.
True
The ability to do work is called?
Extra 100 points: Stored energy that does not move is called _________energy.
Energy
potential
A repeating path in space that one object takes around another is called an __________.
orbit
What do we call a tool that allows us to use a force in a convenient way?
a machine
T/F Unlike gears and pulleys, levers cannot give us a mechanical advantage.
False
What is the machine that uses a combination of an axle and a lever and is used to lift objects like a bucket out of a well?
Winch
Visible energy is called ______________ energy.
Light
Extra 100 points: T/F Kinetic energy is the energy of motion. True
What is a weak (lower) tide called that happens when the sun and moon are not aligned with the earth?
Neap tide
What measurement do most scientists use to measure work?
Newton-meter
Inclined planes
What is the special type of gear called that has its ratio measured by the angle of the threads?
worm
Spring tide
What do we call it when we measure how much work something can do in a certain amount of time?
Power
Ramp
What is it called when we have two gears connected by a chain, and when the large gear turns once, the small gear turns two or more times?
Gear ratio
The fact that energy can never be created or destroyed is called the _____________of energy.
Conservation
What is a machine that converts heat energy into mechanical energy called? (can be natural machine like a hurricane)
Heat energy