A force that opposes motion between two surfaces due to their mass.

• Distance

• Friction

• Force

• mean

A variable that is affected by the change in another variable.

• independent variable

• mean

• dependent variable

• control

A change in an object's position over time.

• direction

• motion

• friction

• force

A push or a pull

• mass

• weight

• force

• mean

The amount of space between two point or objects; how far away something is.

• dependent variable

• distance

• weight

• balanced force

Force acted upon an object due to gravity.

• balanced force

• gravity

• unbalanced force

• weight

The average, add all the numbers and then divide by the amount of numbers you added.

• mean

• median

• mode

• range

The amount of matter in an object.

• weight

• mass

• velocity

• acceleration

A force that has a change in motion.

• balanced force

• gravity

• unbalanced force

• air resistance

An attractive force between all objects that have mass.

• magnetism

• motion

• gravity

• distance