Heat Transfer Quiz

Question 1

Heat Transfer:

Answer 1

Heat can travel (flow/transfer) from one place to another in three ways: conduction, convection, and radiation

Question 2

Conduction

Answer 2

in a solid, hotter molecules vibrate more and pass along their energy to cooler molecules. Heat energy always flows from something that is hot (called a heat source) to something that is cold (called a heat sink). Conduction requires direct contact.

Question 3

Convection

Answer 3

caused by differences in density within a liquid or a gas (a fluid). Warm/hot air, magma, or water always rises. Cool/cold air or water always sinks. Example: Plate tectonics

Question 4

Radiation

Answer 4

heat can travel through empty space by radiation. Energy travels from the sun to the earth by radiation; electromagnetic energy. Radiation is the only form of heat flow that does not need to flow through a substance (medium).

Question 5

Absorption and Radiation:

Answer 5

Dark colors/black absorb and radiate heat the fastest rough surfaces also absorb heat/sunlight easier; smooth surfaces reflect heat/sunlight

Question 6

Specific Heat

Answer 6

The different specific heats listed on your ESRT p.1 explain why materials change temperature at different rates
Land/sand absorb and radiate(give off) heat the fastest because they have a low specific heat Liquid water has a higher specific heat so it takes more energy and a longer amount of time to warm up/cool down (absorb/radiate heat)