Understanding Rain Clouds

Front

Water Vapor Noun

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[waw-ter vey-per]

Back

Water Vapor

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Water in its gaseous state, which is invisible and mixes with other gases in the air.

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Example: Water molecules in a jar evaporate into the air, showing water turning into vapor.

Front

Evaporation Noun

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[ih-vap-uh-rey-shuhn]

Back

Evaporation

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The process where liquid water absorbs energy and changes into a gas, called water vapor, entering the atmosphere.

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Example: The sun heats the puddle, causing water to evaporate into the air.

Front

Air Parcel Noun

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[air pahr-suhl]

Back

Air Parcel

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An imaginary body of air with specific temperature and humidity, used to understand atmospheric processes like cloud formation.Example: Warm air rises, expands, and cools, forming clouds as it reaches higher altitudes.

Front

Temperature Noun

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[tem-per-uh-cher]

Back

Temperature

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A measure of the average energy of motion of the particles in a substance, indicating its degree of hotness or coldness.

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Example: Particles in hot areas move faster than in cold areas, showing temperature differences.

Front

Thermal Energy Noun

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[thur-muhl en-er-jee]

Back

Thermal Energy

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The total energy of the moving atoms and molecules within a substance, which is transferred as heat.

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Example: Molecules in a hot area move faster and transfer thermal energy to a cooler area.

Front

Conduction Noun

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[kuhn-duhk-shuhn]

Back

Conduction

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The transfer of heat energy through direct contact between particles of a substance, without movement of the substance itself.

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Example: Heat flows from a hot block to a cold block, showing conduction.

Front

Convection Noun

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[kuhn-vek-shuhn]

Back

Convection

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The transfer of heat energy through the movement of fluids, like air or water, where warmer fluid rises.

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Example: Warm water rises and cool water sinks, creating a convection current in the pot.

Front

Radiation Noun

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[rey-dee-ey-shuhn]

Back

Radiation

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The transfer of energy through electromagnetic waves, such as heat from the sun traveling through space to Earth.

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Example: The sun emits energy as electromagnetic waves that travel through space to Earth, demonstrating radiation.

Front

Condensation Noun

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[kon-den-sey-shuhn]

Back

Condensation

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The process where water vapor in the air cools and changes its state from a gas back into liquid water.

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Example: Warm air rises, cools, and condenses into clouds, showing condensation.

Front

Cloud Noun

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[kloud]

Back

Cloud

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A visible mass of tiny liquid water droplets or ice crystals that have condensed in the atmosphere.

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Example: The image shows how water droplets in clouds grow and fall as rain, explaining the formation of rain clouds.