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L11-Chemistry/Physic

CHEC 5th/6th Science

QuestionAnswer
Conduction When heat source and heat sink are connected through matter.
Combustion Chemical process in which material reacts with oxygen and gives off heat.
Fire Triangle Requirements for a fire are heat, oxygen and fuel
Ignition Temperature temperature something must reach to ignite.
Temperature Measures how active the molecules of a substance are.
Fahrenheit The most common units people in the USA measure temperature.
Celsius Most common units people outside the USA measure temperature.
Kelvin Units used to measure temperature which only scientists use.
Thermal Expansion Expansion due to an increase in temperature.
Thermal Energy Heat energy
Laws of Thermodynamics 4 laws which deal with energy and all of matter
Thermodynamics Study of thermal energy
Zeroth Law Thermal equilibrium or objects which are at the same temperature
1st Law of Thermodynamics Energy and matter can never be created nor destroyed
2nd Law of Thermodynamics The universe is in a constant state of increasing disorder or entropy
3rd Law of Thermodynamics Entropy approaches its minimum as it reaches absolute zero
Absolute Zero 0K or -273.15⁰C or -459.67⁰F. Nothing can be colder than this temperature.
Heat Atoms in motion
Heat Source An object which is hotter than another
Heat Sink An object which is cooler than another
Radiation Energy that moves through space
Radiant Heat Heat which moves through empty space
Convection Heat that transfers in liquids and gases
Sea Breeze As air over land is heated by the surface, it travels over the ocean. The air over the ocean rushes in to replace the heated land air. This causes a sea breeze.
Popular Physical Science sets

 

 



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