thermal energy
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- In what forms is water a fluid? give 3
- tap water, water vapor, steam
- In what form is water not a fluid give 2
- snow and ice
- 3 examples of a method of heat transfer?
- conduction, radiation, convection
- which kind of material would reflect radiant energy?
- light colored materials
- What is an example of a heat mover?
- refrigerator
- OTEC
- Ocean thermal lenergy conversion
- 1 example of a method that is NOT a heat transfer
- insulation
- 1 example of a poor thermal insulator
- aluminum
- Waste gases are removed during what of a four-stroke engine?
- exhaust strjoke
- What is the main difference between electrical and fored-air heating systems?
- electrical systems have no furnaces and no fuel is burned. forced air systems use fuel-burning furnaces
- Heat can move easily through a good thermal
- conductor
- What changes thermal energy into mechanical energy?
- heat engine
- what are usually the best conductors of heat
- metals
- acting solar heating
- collecting the sun's energy with solar panels, heating water with that energy and storing the heated water to use the energy later.
- in solar heating systems, radiant energy from the sun is converted into?
- thermal energy
- what are important considerations when selecting insulation for a house?
-
R-value
location
climate - how does conduction differ from convection?
- in conduction, particles remain in place, in convection, fluid particles move from place to place
- what is the most important way thermal energy is trasferred in fluids?
- convection
- What does no require the presence of particles of matter?
- radiation
- insulator
- a device that does not allow heat or electrons to move through it easily
- conduction
- The transfer of energy through matter in which energy moves from particle to particle, easier in solids
- combustion
- rapid burning
- In order for radiant energy to change to thermal energy, it must be?
- absorbed
- How is energy transferred?
- particles moving at different speeds bump into each other
- convection
- transfer of energy by bulk movement of matter in which particles move from place to place in a fluid, carrying the energy with them.
- fluid
- any liquid that flows liquids and gasses are fluid
- solar energy
-
enegy from the sun
FREE- converted to thermal energy to heat buildings -
heat mover
example -
device that transfers thermal energy fro one place to another
refrigerator, air conditioner -
external combustion engine
give example -
engine in which fuel is burned outside the engine.
old fashioned locomotive -
heat engine
example - device that converts themal energy into mechanical energy. car engine
-
internal combustion engine
example -
device uin which fuel is burned inside the engine (cylinders)
car engine - solar collector
- device that absorbs radiant energy from the sun and converts it to thermal energy to heat buildings
- radiator
- device with large surface area that transfers heat to surroung air by conduction
- radiation
- energy transfer by electromagnetic waves
- ocean thermal
- process that uses difference in water temperatures to operate a heat engine
- Where does conduction take place
- solids, liqids and gases