Grade 7 · Physics
This quiz helps revise “Work, energy and power” in Physics for grade 7. It has 25 questions in five categories: Work by Forces, Forms of Energy, Energy Changes, Power, Simple Machines. Questions get harder as the points go up, from 100 to 500.
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
A student pushes a wall, but the wall does not move. How much mechanical work does the student do on the wall?
What is the SI unit of mechanical work?
A force of 10…
In the gameA sled slides forward…
In the gameA force acts along…
In the gameA ball rolls along a path. What kind of energy does it have because it is moving?
Water is held high behind a dam. What kind of mechanical energy does it have because of its height?
What is the pictured…
In the gameA 2 kg bucket…
In the gameTwo identical balls move…
In the gameA toy car rolls down a hill and speeds up. What happens to its energy of motion?
At what point in its swing does a pendulum bob move fastest?
When a bicycle brakes…
In the gameWhat stays constant when…
In the gameA ball has 100…
In the gameA motor does the same work in half the time. What happens to its power?
What is the SI unit of power?
A winch does 100…
In the gameA machine does work…
In the gameOne motor does 600…
In the gameWhat simple machine is the ramp used to roll a crate into a truck?
What is the grooved wheel with a rope running over it called?
Which simple machine does…
In the gameA horizontal lever has…
In the gameA machine takes in…
In the gameAll 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.
