Solar Ovens

Question 1

conduction

Answer 1

Heat flow due to the contact of two objects or within a solid object. (Example: metal spoon in hot tea cup)

Question 2

convection

Answer 2

Heat flow due to fluid movement such as water or air

Question 3

emissivity

Answer 3

How much electromagnetic energy is reflected and how much is absorbed by an object in the form of heat. Emissivity is very dependent on color. (Examples: Aluminum foil has a low emissivity because it reflects a majority of heat and a black surface has a high emissivity because it absorbs a lot of heat; a black shirt gets hotter than a white one in the sun.)

Question 4

insolation/solar radiation

Answer 4

The amount of solar radiation that reaches a given area

Question 5

insulator/insulation:

Answer 5

A material that does not conduct heat very well and has a low thermal conductivity. (Examples: A good jacket, fiberglass insulation, a sleeping bag, anything with air trapped in it.)

Question 6

nonrenewable resource

Answer 6

A resource that is not replaceable after it has been used. (Examples: Fossil fuels such as oil or natural gas, iron ore.)

Question 7

radiation

Answer 7

Energy transferred through the movement of electromagnetic waves; heat transfer not requiring a medium. (Ex: Feeling the heat from a campfire without touching the fire itself)

Question 8

renewable resource

Answer 8

A resource that is inexhaustible or replaceable by new growth; limitless supply. (Example: Solar energy.)

Question 9

Thermal conductivity

Answer 9

The property of a material that determines how well it conducts/transmits heat. (Examples: Metal generally has a high thermal conductivity, plastic generally has a low thermal conductivity.)