8th Grade Summer Science Review

Front

What is a collision?

Back

A collision is where a moving object hits or runs into another object.

Front

True or False: Collisions only occur when contact is made.

Back

True

Front

What is a contact force?

Back

A contact force is a type of force that occurs when two objects are physically touching each other.

Front

What type of collision occurs when two objects collide and stick together?

Back

Type A collision.

Front

What type of collision occurs when two objects collide and bounce off each other?

Back

Type B collision.

Front

What type of collision occurs when one object collides with another and transfers energy without sticking?

Back

Type C collision.

Front

What is the law of conservation of momentum?

Back

The law states that the total momentum of a closed system remains constant before and after a collision.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

How does mass affect momentum?

Back

Momentum is the product of mass and velocity; therefore, an increase in mass increases momentum.

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, kinetic energy is conserved; in inelastic collisions, kinetic energy is not conserved.