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OP25 measure the temperature of various solids and liquids at, above and below room temperature; determine the melting point of ice and the boiling point of water
1. What is your understanding of temperature?
2. What is a thermometer used to measure?
3. What is the scale on the thermometer that you are using?
4. What substance is in the thermometer?
5. Do you think this substance a solid, a liquid or a gas?
6. How should you take a reading from a thermometer?
7. What change would you expect to observe in the thermometer if the temperature changed?
How do we find the temperature of things ?
1. INSTRUCTIONS: Remember to include the units!!
2. First find the temperature of the room. _____________________
3. Measure the temperature of a variety of substances below and by comparing your result to the room temperature, determine if they are above or below room temperature.
Homework pg 336 q 6, 7
SOLIDS
Wood (Table)
Ice
Hand
Candle
Jelly
Glass
Metal
LIQUIDS
Cold water
Hot water
To determine the boiling point of water-
This is the point where the water begins to boil and begins to change from water to steam.
Predict your expected result:_____________________
Result found:_________________________________
Can you give an explanation why there may be a difference between the 2 values?______________________________________________________
To determine the melting point of ice.-
This is the point where the ice begins to melt and begins to change from ice to water.
Predict your expected result:_____________________
Result found:_________________________________
Farenheits 0 the freezing temp of water with salt and 100 at body temperature.
We in Ireland do not use the Farenheit scale of temperature, but instead prefer the Celcius scale, that was devised by the Swedish astronomer, Anders Celcius in 1742. However Anders made the freezing point of water 100 oC and the boiling point of water at 0 oC. It took the father of taxidermy Carl Linnaeus (a fellow Swedish scientist) to reverse the scale, he took this decision to make the measurements easier to make.
more interesting temperatures here
http://physics.info/temperature/
The temperature of the surface of the sun is about 6000 °C. Sun spots (dark patches) are areas on the sun’s surface at a lower temperature due to variations in the sun’s magnetic field
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