2.3 (3Q) Flashcards
What is temperature?
Measure of the average kinetic energy of the particles in a system
If two bodies are at different temperatures what will happen?
Heat will flow from the hotter to colder
What are the different types of thermometers used?
Bulb thermostat
Bimetallic thermistor
Thermistor
What is a thermocouple?
Used to measure high temps
What is a bulb thermometer?
Contain mercury
What’re is not used as it would freeze
Visual indication as temp increases
What is a bimetallic thermometer?
A device to measure temperature that uses a bimetallic strip
Relays on the fact that different metals will expand at different rates
Where are direct reading bimetallic temperature gauges used?
To measure free air temp or outside air temp
What is a thermistor?
Device to measure temperature that changes its electrical resistance with changes in temperature
What is the most common used temp scales?
Celsius
Fahrenheit
Kelvin
Describe Celsius?
Metric system
How would you find Celsius to Fahrenheit?
C = 9/5 (F - 32)
Describe Fahrenheit?
Imperial system
How would you work out Fahrenheit from Celsius?
F = 9/5 * C + 32
What is 0 degrease Celsius in kelvin?
-273.15K
What is boiling point and freezing point of water and what is absolute zero in Celsius, Fahrenheit and kelvin?
Celsius- boiling point 100 - freazing point 0 - absolute zero -273.15
Kelvin - boiling point 373 - freazing point 273 - absolute zero 0
Fahrenheit - boiling point 212 £ freezing point - 32 - absolute zero-460
