Cambium/AIR Practice - Physical Science (Force and Motion)

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, typically measured in newtons (N). It depends on the mass of the object and the acceleration due to gravity.

Front

What is the relationship between force and motion?

Back

Force is any interaction that, when unopposed, will change the motion of an object. Motion is the change in position of an object over time.

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Front

What happens when like poles of magnets are brought together?

Back

Like poles of magnets repel each other, meaning they push away from one another.

Front

What happens when opposite poles of magnets are brought together?

Back

Opposite poles of magnets attract each other, meaning they pull towards one another.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by a net external force.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another. It acts in the opposite direction to the motion.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × acceleration due to gravity (g). Typically, g is approximately 9.8 m/s² on Earth.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object; the object remains at rest or continues to move at a constant speed in a straight line.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate, changing its speed or direction.