Definitions
An instrument for measuring temperature
Thermometer
Freezing/melting point of water in celsius
0oC
Who invented the thermoscope?
Galileo
When calibrating, how would you label the 0 on thermometer in oC?
Put the thermometer in ice and water.
When a solid is heated what happens? (Think about the ball and ring example)
The metal expands.
Thermostat
An instrument for controling the temperature of a house or appliance.
Room temperature in celsius
20oC
FREE SPACE!!!
FREE SPACE!!!!
When calibrating, how would you label the 100 on thermometer in oC?
Put the thermometer in boiling water.
What happens to molecules of a substance as it gets colder?
They move more slowly
when the volume of a substance gets bigger as it gets hotter
Thermal expansion
Body temperature in celsius
37 oC
Who invented the Celsius scale?
Anders Celsius
What is the final step in calibrating a thermometer?
Divide the interval equally in 100 degrees.
What happens to molecules when a substance gets warmer?
The molecules speed up
An instrument that shows temperature changes but does not measure the degrees.
Thermoscope
Boiling point of water in celsius
100oC
Who invented the Fahrenheit scale?
Gabriel Fahrenheit
What does calibrating mean?
To calibrate means to accurately mark the numbers on a scale.
What happens to molecules at absolute 0?
Absolute zero is when the molecules stop moving altogether.
a thin strip made of two different metals, which curves when heated or cooled because one metals expands and contracts more than the other with temperature.
Bimetallic strip
Body temperature in celsius
98.6oF
Who invented the Kelvin scale?
William Thomson, Lord Kelvin
What did Gabriel Fahrenheit use to set the 0 degrees on his thermometer?
He used a mix of ice, water and salt, that getsmuch colder than ice water alone.
Why are there no negative temperatures in the Kelvin scale?
Because you don't need negatives when you use 0 for the coldest possible temperature.