WorksheetsScience Challenge
Total questions: 10
Worksheet time: 5mins
What is the flow of electric charge called?
electric current
electricity flow
power movement
charge stream
Name the unit used to measure electric current.
Ohms
Watts
Volts
Amperes (A)
What is the SI unit of electric potential difference?
joule
volt
ohm
ampere
Define resistance in an electrical circuit.
Resistance in an electrical circuit is the opposition to the flow of current.
Resistance in an electrical circuit is the speed of current flow.
Resistance in an electrical circuit is the absence of current flow.
Resistance in an electrical circuit is the facilitation of current flow.
What type of simple machine is a seesaw?
pulley
wheel
lever
screw
Which simple machine is used to lift heavy objects?
Screw
Wheel and axle
Pulley
Lever
What is the purpose of a pulley?
To play music
To change the direction or magnitude of a force
To increase the temperature of a room
To cook food faster
Name the simple machine that consists of a wheel with a rope or chain around it.
Gear
Lever
Screw
Pulley
What is the mechanical advantage of an inclined plane?
Height of incline / Length of incline
Width of incline / Height of incline
Weight of object / Force applied
Length of incline / Height of incline
Explain how a lever works in terms of force and distance.
A lever works by dividing the force applied through the distance from the pivot point.
A lever works by reducing the force applied through the distance from the pivot point.
A lever works by keeping the force constant regardless of the distance from the pivot point.
A lever works by multiplying the force applied through the distance from the pivot point.
