Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another. It is a force that opposes motion.

Front

What factors affect the amount of friction between two surfaces?

Back

The amount of friction depends on the types of surfaces in contact and the force pressing them together.

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured in an experiment. It is affected by changes in the independent variable.

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

How does surface texture affect friction?

Back

Rough surfaces generally create more friction than smooth surfaces because they have more irregularities that interlock.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

In an experiment, if the surface type is changed, what is being tested?

Back

The effect of surface type on the amount of friction experienced by an object.

Front

What is the relationship between force and friction?

Back

The force of friction is proportional to the normal force acting on the surfaces in contact.

Front

What is a spring scale used for in experiments?

Back

A spring scale is used to measure the force exerted on an object, typically in Newtons.

Front

What does it mean if an experiment has a control group?

Back

A control group is a standard for comparison that is not exposed to the experimental treatment.