8th Grade Physical Science GMAS Challenge

Front

What arrangement and movement do particles of mercury (liquid state) display?

Back

Particles are close together but they are able to slip past one another.

Front

At which point does a pendulum have the greatest kinetic energy?

Back

Point C.

Front

What kind of wave is a sound wave?

Back

Sound waves are longitudinal waves.

Front

What is an example of a chemical change?

Back

Carbon joining with oxygen to form carbon dioxide.

Front

What is the name and atomic number for the element K?

Back

Potassium and 19.

Front

What is the definition of kinetic energy?

Back

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

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the definition of a longitudinal wave?

Back

A longitudinal wave is a wave in which the particles of the medium move parallel to the direction of the wave's propagation.

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 the definition of an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.