Heat and Tempurature Topic 7-8

Question 1

8 sources of thermal energy

Answer 1

• chemical energy
• electrical energy
• mechanical energy
• geothermal energy
• solar energy
• wind
• nuclear
• fossil fuels

Think of- Class Eats Mega Greens So We Not Fat

Question 2

Chemical Energy

Answer 2

-CHEMICAL ENERGY
- stored thermal energy
- when burned produces big amount of thermal energy
Example: woof & coal

Question 3

Electrical energy

Answer 3

-can be produced in lots of ways
-Negative impacts- wildlife and habitats,livliehood of people who work in areas
Example: hydroelectric dams crate energy by falling water

Question 4

Mechanical energy

Answer 4

-Forces that push/pull objects
- release thermal energy (FRICTION)
Example: car brakes, tires, bike pump,skidding tires

Question 5

Geothermal Energy

Answer 5

-natural source of thermal energy
-harnessed to produce electrical energy
Example: Volcanoes,hot springs,geysers

Question 6

Solar Energy

Answer 6

• energy from sun
• clean source
• will never run out
• times not available (night/storms)
• two forms (active/passive)

Question 7

Wind energy

Answer 7

-energy of moving air
- results from convection currents through solar energy(heating and cooling air)
Examples: wind turbines to produce electricity

Question 8

Nuclear energy

Answer 8

-Energy to split atoms
- massive amounts of energy released
- when malfunction disaster can strike (Chernobyl)
5 plants in Canada- 3 in Ontario- 1 in Quebec-1 in New Brunswick

Question 9

Passive solar heating

Answer 9

Used materials in a structure to absorb,store and release

Example: wall of windows in a house, greenhouse

Question 10

Active solar heating

Answer 10

Use solar collectors along with fans to distributes stored thermal energy, usually in a liquid, throughout a home/building