Term
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Definition
| A form of energy resulting from the motion of particles in matter |
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Term
| Heat flows from a warmer object to a ________ object |
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Definition
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Term
Where does the sun's heat come from? |
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Definition
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Term
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Definition
| the reaction that occurs when atoms are joined together and energy is released |
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Term
| When was the 1st steam engine produced |
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Definition
| before 300ad by the greeks |
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Term
| Friction is a form of ______ ______- the energy of _______that produces heat. |
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Definition
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Term
Heat causes paricles to move faster and move farther apart. heat can also _____ _____ from one _____ to another |
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Definition
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Term
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Definition
the gas particles are moving fast, they bump each other more often and push other apart. |
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Term
cooled water ______ until 4*C then it begins to _____ at ___ |
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Definition
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Term
What does (hvac) stand for? What do they do? |
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Definition
heating, ventilation, and air conditioning. they install, maintain, & repair heating, ventilation, & air conditioning. |
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Term
What schooling do the hvac have? |
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Definition
| on the job training & apprienticeship |
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Term
What happens when you put your hand in cold water? |
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Definition
| heat energy from your hand flows into the water and makes the water warm |
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Term
| The higher the temp. the _____ an object's ______move |
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Definition
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Term
How do thermometers work? heat causes the particles in the thermometer do expand as they expand the height is then.... |
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Definition
measured unit the marks of the thermometer |
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Term
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Definition
the temperature scale used by scientists and by people in many countries, in which h2o freezes at 0* and boils at 100* |
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Term
| What are the two formulas we can use? |
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Definition
feherenheit- f= 9/5 x c + 32 or f= 1.8 x c + 32 celcius- c= 5/9 x (f- 32) |
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Term
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Definition
| a temperture at which liquid changes into a solid |
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Term
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Definition
| the temp. at which a solid changes to a liquid |
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Term
| how is temp. heat diffrent? |
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Definition
temp. is a measure of how fast of molecules in a substance are moving. heat is a form of energy depends on the temp. of a substance and the amount of matter, or mass, the substance has. |
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Term
How does a pop up timer work? case contain a plastic stem within a piece of soft metal is a spring. The soft metal is..... |
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Definition
solid room temp. when heated to certain temp and the spring. |
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Term
Define radiation, conduction, insulation, and convection. |
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Definition
radiation- radiant heat (the movement of energy) through a vacuum conduction- the movement of heat energy grom one molecule to the next. insulation- material that doesn't conduct heat well convection- heat that flows from warm to cold |
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Term
What two substances are typlically used in thermometers. a. water and blood b. mercury and alcohol c. fruit smoothies and milkshakes |
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Definition
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Term
Why do we use digital thermometers? a. quicker and easier b. they are germless c. they don't make you sick |
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Definition
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