KS3 SCIENCE: PHYSICS REVISION

Front

What is the charge of an electron?

Back

Negative.

Front

What is the variable in an experiment that is changed by the scientist?

Back

Independent variable.

Front

What is the formula for calculating torque?

Back

Torque = Force x Distance from the axis of rotation.

Front

What is the turning force applied to a wrench if a 15N force is applied 50cm away from the axis of rotation and moves a distance of 10 cm?

Back

7.5 Nm.

Front

What causes seasonal changes on Earth?

Back

Seasonal changes occur due to the tilt of the Earth's axis and its orbit around the sun.

Front

What are the two main types of fluids?

Back

Liquids and gases.

Front

What is a dependent variable in an experiment?

Back

The variable that is measured or observed in response to changes in the independent variable.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it is in contact with another surface.