How is a Laboratory thermometer made?
Answers
Answer: Laboratory thermometer is made up of sealed glass containing red alcohol or mercury which rises as the temperature increases. As compared to glass-stem thermometers, bimetallic strip thermometers are generally more affordable and easy to use.
Answer:What You Need:
Plastic water bottle
Modeling clay
Clear plastic straw
Food coloring
What You Do:
1. Put a few drops of food coloring into the water bottle and fill it to the top with lukewarm water.
2. Insert the straw a couple inches into the bottle and mold the clay around it to seal the bottle and hold it in place. When you have a tight seal, water should go up into the straw.
3. Use a marker to mark the level of the water in the straw.
4. Set the bottle in a bowl of hot water. Watch the water level for awhile and then mark the level again.
5. Set the bottle in a bowl of ice and watch what happens, then mark the level.