Specific Heat Capacity

What is global warming? https://www.youtube.com/watch?v=rrq1Na90-DQ&list=PLE0FC0C04871200EA

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

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?

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

Specific Heat Capacity

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)

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)

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

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)

Specific Heat Capacity of Common Materials

Specific Heat Worksheet Answer questions on separate piece of paper