Unit 2 Flash Cards

Front

Thermal Energy

Back

Heat energy that changes water’s state. Example: sunlight melting ice.

Front

Solid

Back

Matter with a fixed shape. Example: ice.

Front

Liquid

Back

Matter that takes the shape of its container. Example: water.

Front

Gas

Back

Matter that spreads out to fill space. Example: water vapor.

Front

Evaporation

Back

Liquid → gas. Example: puddle drying in the sun.

Front

Condensation

Back

Gas → liquid. Example: dew forming on grass.

Front

Freezing

Back

Liquid → solid. Example: pond forming ice in winter.

Front

Melting

Back

Solid → liquid. Example: ice turning into water.

Front

Weathering

Back

Breaking down rock over time. Example: cracks in sidewalks.

Front

Erosion

Back

Movement of rock by wind, water, or gravity.