8th Physical Science Review

Front

What do magnets do when they are like poles facing each other?

Back

Repel each other.

Front

What happens to the force of magnetism as two magnets are moved further apart?

Back

The force of magnetism becomes weaker.

Front

What is the NET FORCE if two forces of 10 N and 7 N are acting in the same direction?

Back

17 N in the direction of the forces.

Front

At which point is potential energy the highest in a roller coaster?

Back

At the highest point of the track.

Front

What happens to the gravitational force between two objects as their mass increases?

Back

The gravitational force increases.

Front

What is the definition of magnetism?

Back

Magnetism is a force that can attract or repel certain materials, primarily metals like iron.

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or arrangement.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv^2.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass, calculated as W = mg.