Ch.5 Sec.3

Question 1

Solar collector

Answer 1

Device to used in an active solar heating system that transfers radiant energy from the sun into thermal energy

Active solar heating device that transfers the suns radiant energy to thermal energy

Ex. Solar panel

Question 2

Thermodynamics

Answer 2

Study of the relationship between thermal energy, heat, and work

Thermal energy, heat, and work’s relationship

Ex. Heat and work increase thermal energy

Question 3

First law of Thermodynamics

Answer 3

If the mechanical energy of a system is constant, the increase in thermal energy of a system equals the work done on the system plus the heat added to the system

Mechanical Energy of the system is constant thermal energy= work + heat

Ex. Tell him of a system can be increased by adding heat, doing work, both

Question 4

Second law of Thermodynamics

Answer 4

Energy spontaneously spreads from regions of higher concentrations to regions of lower concentrations

Higher to lower when it comes to how energy spreads

Ex. Energy is burning from one warm room to a cool room

Question 5

Heat engine

Answer 5

Device that converts some thermal energy into mechanical energy

Thermal energy to mechanical

Ex. Fuel burns in cylinders and pushes the pistons down

Question 6

Internal combustion engine

Answer 6

Heat engine that burns fuel inside the engine in chambers or cylinders

Engine that burns the fuel

Ex. Cylinders and chambers

Question 7

How to heating systems work? Forced air? Radiator systems? Electric heat?

Answer 7

Forced air: fuel is burned in the furnace and heat air that is blown into ducks and vents. Cool air returns to the furnace and gets reheated.
Electric heat: electric heat coils in ceilings or fours heat by conduction then convention distributes the heated air.
Radiator system: close by metal container that contains hot water or steam and transfers thermal energy to the air.

Question 8

How solar heating works? Passive? Active?

Answer 8

Passive solar: solar energy heats materials in rooms inside the building, but does to mechanical devices to move the heat to other areas.
Active solar: uses solar collectors to observe radiant energy, which is been circulated through the building.

Question 9

How do refrigerators, air-conditioners, and he pumps transfer from energy?

Answer 9

Refrigerators: coolant changes to gas, absorbs heat from inside of the fridge, releases it onto the outside as heat
Air conductor: cools warm air
Cool is in heat air, pumps air throughout building