1. Specific Heat Capacity

2. What is global warming?

3. Cogeneration
Sometimes negative effects can be turned into more positive effects – cogeneration uses waste from thermal pollution to produce electricity or uses the waste to heat buildings.
FACT: when fuel burns in a thermo-electric power plant, only about 1/3 of its energy is converted into electricity – cogeneration is efficient because it uses some of the remaining 2/3 of energy

4. What do you think?
Do you think global warming is something we should worry about?
What do you think we should do about it?
How can we reduce the amount of CO2 to reduce the greenhouse effect?

5. Thermos Presentation Day!
Set up a table with your Partner, Thermos and Brochure
Judges will come around and talk to each of you individually

6. Specific Heat Capacity

7. What is Heat Capacity?
Heat Capacity: a number that tells you how much thermal energy must be added to the object to make its temperature increase by 1°C
Large (#)= large amount of heat is required to make its temperature increase a little (eg: water)
Small (#)= small amount of heat is required to make its temperature increase (eg: sand)

8. Specific Heat Capacity
Temperature change depends on how much of material you are trying to heat up
Specific Heat Capacity: the amount of energy you must add to a standard amount of a material (1g or 1Kg) to increase its temperature by 1°C)

9. Example: Copper and Water
Specific Heat Capacity of Cu: 0.39J/gºC
It takes 0.39J (J=joules, a measurement of energy) to warm 1g of copper 1ºC
To warm it by 2ºC you need 2x0.39J=0.78J
Specific heat capacity of water: 4.186J/gºC
It takes 4.186J of energy to warm 1g of water 1ºC

10. Specific Heat Capacity- Water
Water has a high heat capacity, so it can store a lot of heat, and it takes a long time to heat up (compared to other substances) and a long time to cool off
In other words, water can absorb a lot of heat without raising its temperature very much (good as a cooling system of engines/other systems)

11. Specific Heat Capacity of Common Materials

12. Specific Heat Worksheet
Answer questions on separate piece of paper