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4.1
4.2
5.1
5.2
5.3
100
The ability to cause change; required to cause change
What is energy?
100
Energy generally associated with TV's. lamps, computers, etc.
What is electrical energy?
100
Transfer of energy that occurs when a force makes an object move.
What is work?
100
A device that makes work easier.
What is a machine?
100
A machine that does work with only one movement.
What is a simple machine?
200
Energy present in motion
What is Kinetic Energy?
200
The sum of the potential energy and kinetic energy in a system.
What is mechanical energy?
200
The amount of work done in a certain amount of time; rate at which work is done
What is power?
200
The force applied to a machine and the force need to overcome the resistance.
What are effort and resistance forces?
200
A machine consisting of two wheels of different sizes that rotate together.
What is a wheel & axle?
300
The SI unit for energy
What is a joule?
300
Energy cannot be created nor destroyed
What is the law of conservation of energy?
300
Calculation for work.
What is force x distance?
300
A perfect machine with no friction.
What is an ideal machine?
300
The calculation of IMA for a lever.
What is the length of effort arm/ length of resistance arm?
400
Energy stored by objects above the Earth's surface.
What is gravitational potential energy?
400
4.184 J
What is a calorie?
400
The two possible equations for power.
What is work/time and energy/time?
400
The number of times a machine multiplies the effort force.
What is mechanical advantage?
400
A system of pulleys consisting of fixed and movable pulleys.
What is a block & tackle?
500
Calculation of kinetic energy in an object
What is 1/2m(kg) x v^2(m^2/s^2)?
500
The process of converting small amounts of mass into enormous quantities of energy; (There are two names)
What is nuclear fusion and nuclear fission?
500
The amount of energy required to lift a baseball 0.7 meters.
What is a joule?
500
Calculation for efficiency.
What is W(out)/W(in) x 100%?
500
The names of all the simple machines.
What are levers, pulleys, wheels & axles, inclined planes, screws, and wedges?