Science 8 Semester 1 Exam Review pt 1

Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size and opposite in direction, resulting in no change in motion.

Front

How do you calculate speed?

Back

Speed is calculated using the formula: Speed = Distance / Time.

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

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

Front

What effect does friction have on a moving object?

Back

Friction causes a moving object to slow down and eventually stop.

Front

What is an index fossil?

Back

An index fossil is a fossil that is useful for dating and correlating the strata in which it is found.

Front

What is the formula for calculating distance?

Back

Distance = Speed x Time.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it comes in contact with another surface.