Q2 Review 5th Grade Physical Science

Front

What is constant speed?

Back

Constant speed means an object travels the same distance in each unit of time.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without changing its chemical composition.

Front

What causes materials to expand when heated?

Back

Heat causes materials to expand because the particles move faster and spread apart.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the Earth pulling objects toward its center.

Front

What happens to water when it evaporates?

Back

When water evaporates, it gains heat energy and changes from a liquid to a gas.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is the role of friction in motion?

Back

Friction is a force that opposes motion between two surfaces in contact.

Front

What is the process of condensation?

Back

Condensation is the process where water vapor cools and changes back into liquid water.

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object, related to its temperature.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of the Earth's surface due to trapped heat from the sun.