Work, Power & Machines
Simple Machines
What is Energy?
Conservation of Energy
Random Stuff
100
This is defined as the rate at which work is done.
What is power?
100
A ramp is a _______________ that decreases the force required to move an object while increasing the distance the object travels.
a. force
b. load
c. newton
d. machine
d. machine
100
A measure of the ability to do work
What is Energy?
100
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed.
100
Energy due to motion.
What is Kinetic Energy?
200
Lifting a car using a car jack is easier because it requires:
a. less force
b. less work
c. less time
d. none of the above
a. less force
200
Levers are divided into ________ classes based on the location of the fulcrum and of the input and output forces.
3
200
Mechanical energy can change to nonmechanical energy as a result of:
a. air resistance
b. heat
c. radiation
d. None of the above
a. air resistance
200
______________ is the ratio of useful work output to work input.
a. potential energy
b. efficiency
c. kinetic energy
d. power
b. efficiency
200

The hull identification of the original starship USS Enterprise

What is NCC-1701?

300
A boy pushes on a parked car with a force of 200N. The car does not move. How much work does the boy do on the car?
a. 200 N
b. 200 kg
c. zero
d. None of the above
c. zero
300
A wedge is a modified:
a. wheel and axle
b. pulley
c. inclined plane
d. lever
c. inclined plane
300
Gravitational potential energy depends on
a. the mass of the object
b. the height of the object
c. the acceleration due to gravity
d. All of the above
d. All of the above
300
At the top of its arc, a thrown ball has ______potential energy.
a. maximum
b. minimum
c. zero
d. advantage
a. maximum
300

The first country to allow women to vote

What is Australia?

400
Power is calculated by dividing work by _______________.
What is time?
400
A______________ is defined as a machine made up of more than one simple machine.
What is a compound machine?
400
The primary source of the sun's energy is:
a. chemical energy
b. nuclear fusion
c. nuclear fission
d. potential energy
b. nuclear fusion
400
This type of energy lies at the level of atoms and does not affect motion on a large scale.
What is Nonmechanical energy?
400

The SI unit for both Work and Energy.

What is the Joule?

500
A machine is a device that
a. requires less work to do a given task
b. decreases the amount of work done by a given force
c. increases energy
d. can multiply and change the direction of an input force
d. can multiply and change the direction of an input force
500
All levers have a rigid arm that turns around a point called the _______________.
Fulcrum
500

The kind of energy associated with atomic bonds is

a. nuclear energy

b. light energy

c. chemical energy

d. kinetic energy

c. chemical energy

500
The process that transforms light energy into chemical energy in plants is called_________________.
What is Photosynthesis.
500

The names of all Star Wars MOVIES in chronological order

What is The Phantom Menace, Attack of the Clones, Revenge of the Sith, Solo, Rogue 1, A New Hope, The Empire Strikes Back, Return of the Jedi, The Force Awakens, The Last Jedi, The Rise of Skywalker?

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