OLM Science6_9
- 1. Chapter 9 Heat & Heat Technology Temperature Section 1
- 2. Temperature Measure of the average kinetic energy of the particles in an object
- 3. Kinetic Energy The particle with the higher amount of kinetic energy will have the higher temperature
- 4. Thermal Expansion The increase of the volume of a substance due to an increase in temperature
- 5. Fahrenheit Temperature Scale Water boils 212 – Body Temp 98.6 Room Temp 68 - Water freezes 32
- 6. Celsius Temperature Scale Water boils 100 – Body Temp 37 Room Temp 20 - Water freezes 0
- 7. Kelvin Scale Water boils @ 373–Body Temp 310 Room Temp 293-Water freezes 273
- 8. Absolute Zero The lowest temperature on the Kelvin scale (k) is 0 K
- 9. Thermal Expansion Segments expand when temperature rises and contracts when the temperature drops
- 10. Chapter 9 Heat & Heat Technology What is Heat? Section 2
- 11. Heat Transfer of energy between objects that are different temperatures
- 12. Thermal Energy The total kinetic energy of the particles that make up a substance
- 14. Conduction Transfer of thermal from one substance to another
- 15. Conductors Substances that conduct thermal energy
- 16. Insulators Substances that do not conduct thermal energy
- 17. Convection Transfer of thermal energy by movement of liquid or gas
- 18. Radiation Transfer of thermal energy through space
- 20. Specific Heat Capacity Amount of energy need to change the temperature of a substance by 1 degree Celsius
- 21. Calculating Heat Energy transferred(J) = Specific heat capacity(J/kg X C) X mass (kg) X change in temperature (C) J = (j/kg X C)X(kg)X(C)
- 22. Calories & Kilocalories Kilocalorie (kcal) is equal to 1,000 calories Calories (with capital C) is equal to 1,000 calories
- 23. Chapter 9 Heat & Heat Technology Matter Heat Section 3
- 24. States of Matter Physical forms in which a substance can exist
- 25. Particles of Solid Particles do not move fast enough to overcome the strong attraction between them
- 26. Particles of Liquid Move fast enough to overcome some of the attraction between them
- 27. Particles of Gas Move fast enough to overcome nearly all of the attraction between them
- 28. Change of State Conversion of a substance from one physical form to another
- 29. Changes of State for Water
- 30. Chemical Changes Changes that occur when one or more substances are changed into entirely new substances
- 31. Chapter 9 Heat & Heat Technology Heat Technology Section 4
- 33. Hot-Water Heating System Water is heated then pumped through pipe work that leads to radiators in each room
- 34. Warm Air Heating System Air heated in a separate chamber in the furnace. Warm air travels through ducts to different rooms
- 35. Insulation Substance that reduces the transfer of thermal energy
- 36. Solar Heating Systems Passive – Do not have moving parts Active Solar – Have moving parts
- 37. Heat Energy A machine that uses heat to do the work
- 38. External Combustion Engine Simple steam engine
- 39. Internal Combustion Engine Fuel is burned inside the engine
- 40. Air Conditioner Transfers thermal energy inside the building or car to an area outside
- 41. How a Refrigerator Works Compressor
- 42. How a Refrigerator Works Condenser Coils
- 43. How a Refrigerator Works Expansion Valve
- 44. How a Refrigerator Works Evaporating Coils
- 45. Thermal Pollution Excessive heating of a body of water