Understanding Why and Because

Front

Why do plants need sunlight?

Back

Because sunlight is essential for photosynthesis.

Front

Photosynthesis

Back

Process where plants convert sunlight into energy.

Front

Why does ice melt?

Back

Because heat causes the molecules to move faster.

Front

Gravity

Back

Force that pulls objects toward each other.

Front

Why do we have seasons?

Back

Because of Earth's tilt and orbit around the Sun.

Front

Erosion

Back

Process where natural forces move rock and soil.

Front

Why does metal expand when heated?

Back

Because heat increases the vibration of atoms.

Front

Evaporation

Back

Process where liquid turns into vapor.

Front

Why do we need oxygen?

Back

Because it is essential for cellular respiration.

Front

Cellular Respiration

Back

Process of converting glucose into energy in cells.