7th Mid-term SG #1

Front

What is a chemical change?

Back

A chemical change occurs when substances react with each other, resulting in the formation of new substances with different properties.

Front

What is a physical change?

Back

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

Front

What happens to atoms during a chemical change?

Back

Atoms rearrange to form new combinations of atoms and molecules.

Front

What is the water cycle?

Back

The continuous movement of water above and below the surface of the Earth, including processes like evaporation, condensation, and precipitation.

Front

How does energy transfer from the sun to the Earth?

Back

Energy is transferred from the sun to the Earth's surface, and then to the air.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

Give an example of conduction.

Back

Touching a stove and being burned is an example of conduction.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter; it is the total energy of all the particles in an object.

Front

What is the role of the sun in the water cycle?

Back

The sun provides the energy needed for evaporation, which is a key process in the water cycle.

Front

What is the difference between conduction and convection?

Back

Conduction is heat transfer through direct contact, while convection is heat transfer through the movement of fluids.