Solids, Liquids and Gases Use of Graphic Organizers

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Presentation transcript:

Solids, Liquids and Gases Use of Graphic Organizers Effects of Heat Solids, Liquids and Gases Use of Graphic Organizers

Heat on liquid Heat can change the state of things. When enough heat is added to water it boils. Boiling turns the liquid into gas. This gas is called water vapor.

Lowering the heat Water can also turn from a liquid to a solid. When temperature is lowered to 32 degrees F, water turns to ice. This is water’s freezing point.

Chart: States of Water State Temperature point What happens Example Liquid Boiling point 100C Liquid becomes gas Water turns to steam Freezing point 0 C Liquid becomes solid Water turns to ice Solid Melting point 0 C Solid becomes liquid Ice turns to water Gas Deposition point Gas becomes Solid Water vapor turns to frost

What Causes Changes in Heat and Temperature? Causes of Heat and Temperature Energy is used People produce heat by using energy to maintain body functions. Normal body temperature is 98.6 degrees As people use energy to exercise, they produce more heat and raise their temperature. When two or more things interact with one another Heat passes from one thing to another, called heat transfer. For example, the sun warms Earth, fire warms things around it.

Heat Transfer Conduction Heat transfer is when heat moves from one area to another. Conduction A hot object touches a cooler object and heats it. Convection Hot air moves and heats surrounding cool air. Radiation A fire gives off heat that will warm what it is close to.

Conduction 1. Molecules in a hot liquid vibrate quickly. 2.The hot liquid is poured into a room-temperature mug. 3. Heat transfers from the liquid to the mud and the mug’s molecules move faster. 4. The mug becomes warmer. 5. A person holds the mug. 6. Heat transfers from the mug to the hand. 7. The hand becomes warmer

Convection Cooler water from the top of the pot is displaced and moves down to the middle of the pot. Cooler water in the middle sinks and takes the place of water rising from the bottom. Cool water at the bottom of the pot is exposed to the heat from the pot. As the water gets warmer, it rises to the top. This makes room for more cool water below. The rising hot water warms the water around it as it moves around. Hot water rises to the top of the pot.

Radiation The sun radiates, or gives off, heat in the form of light. Light travels in waves. These waves are energy. This light warms the earth.