Science Flashcard on Variables and Forces

Front

What is a control variable?

Back

A control variable is a variable that stays constant during an experiment to ensure that the results are due to the independent variable.

Front

What is work in science?

Back

Work is defined as lifting a weight or moving an object over a distance, such as lifting a 1 kg mass 1 meter.

Front

What force causes objects to fall?

Back

Gravity is the force that causes objects to fall towards the Earth.

Front

What happens to mechanical advantage when the fulcrum is moved closer to the load?

Back

Moving the fulcrum closer to the load increases the mechanical advantage.

Front

What is the fulcrum in a lever?

Back

The fulcrum is the pivot point around which a lever rotates.

Front

What is an independent variable?

Back

An independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured or tested in an experiment.

Front

What is air resistance?

Back

Air resistance is a force that opposes the motion of an object through the air.

Front

What is the effect of gravity in a vacuum?

Back

In a vacuum, gravity is the only force acting on objects, causing them to fall at the same rate.

Front

What is mechanical advantage?

Back

Mechanical advantage is the factor by which a machine multiplies the force put into it.