How do rain clouds form
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How Do Rain Clouds Form? PowerPoint PPT Presentation


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How Do Rain Clouds Form?. http://www.youtube.com/watch?v=1gvHpO26Xv4&feature=related http://www.youtube.com/watch?v=2sb58M1zIrY&feature=related http://www.youtube.com/watch?v=QH1yphfgfFI&feature=related. Changes in State / Phase of Matter. Compare and Contrast. Consumes Energy.

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How Do Rain Clouds Form?

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How do rain clouds form

How Do Rain Clouds Form?

http://www.youtube.com/watch?v=1gvHpO26Xv4&feature=related

http://www.youtube.com/watch?v=2sb58M1zIrY&feature=related

http://www.youtube.com/watch?v=QH1yphfgfFI&feature=related


How do rain clouds form

Changes in State / Phase of Matter


Compare and contrast

Compare and Contrast

ConsumesEnergy

Releases Energy

Freezing

Condensation

Deposition

  • Melting

  • Vaporization (Evaporation)

  • Sublimation


History

History

In ancient times, people used to put rocks from the fire into pools of water to warm the water up

The hot rock would pass energy to the cool water until they both had the same final temperature

heat energy will pass from the hot object to the cool object until the two objects are the same temperature

but the two objects don't necessarily have the same change in temperature


How do rain clouds form

When you put an ice cube in a drink, the drink immediately begins to cool down, but the ice cube will remain at 0° C until it melts completely. How is this possible?


How do rain clouds form

  • The answer is that there is more energy in liquid water at 0°C than in solid water at 0°C.

  • This extra energy in the liquid water is latent or hidden energy.

  • For the solid to liquid (or liquid to solid) phase change, this hidden energy is potential energy and is called the latent heat of fusion


How do rain clouds form

Changes in State of Matter

Gas

Vaporization

Condensation

Liquid

Increasing Energy

Melting

Freezing

Sublimation

Solid

Increasing Particle Motion


Phase changes due to energy gain

Phase Changes Due to Energy Gain

Melting= solid  liquid

Vaporization= liquid  gas


Phase changes due to energy loss

Phase Changes Due to Energy Loss

Freezing= liquid  solid

Condensation= gas  liquid


How do rain clouds form

The specific heat of liquid water is 1 calorie/gram °C, which is higher than any other common substance.

A joule (J) is the unit of energy used in the International System of Units

It takes 2.05 Joules/gram to raise ice by 1 degree C.

It takes 335.55 J/g to convert 0 degree ice to 0 degree water. This is known as the heat of fusion

It takes 4.18 J/g to raise the temperature of liquid water by 1 degree C.

It takes 2257 J/g to vaporize water - that is a lot!


Heat of fusion and vaporization

Heat of Fusion and Vaporization

Heat of Fusion

Heat of Vaporization


Heat of fusion and vaporization with y axis equalized on both sides

Heat of Fusion and Vaporization(with y axis equalized on both sides)

Heat of Fusion

Heat of Vaporization


How do rain clouds form

There will be a similar extra credit problem on the testMelting= solid  liquid Sample problem: How many Joules would it take to raise a 1 gram piece of ice from -1 degree C to liquid water at 1 degree C?

It takes 2.05 Joules/gram to raise ice by 1 degree C.

It takes 335.55 J/g to convert 0 degree ice to 0 degree water. This is known as the heat of fusion

It takes 4.18 J/g to raise the temperature of liquid water by 1 degree C.


How do rain clouds form

  • Phase Changes and Steel

  • Melting Point: 1538°C or 2800°F

  • Boiling Point: 2861°C or 5182°F


How do rain clouds form

http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=557


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