How does a thermometer work?
Students took part in a demonstration of how a thermometer works this month. Students learned that a thermometer measures how hot or cold something is. A scientist says that the liquid in the thermometer expands and moves up or contracts and moves down the tube when the air, or other substance in contact with the thermometer, has more heat or less heat, respectively. How hot or cold the air will feel is measured by its temperature. We discovered that the red liquid inside the bottle will move up and down. When the temperature is hot, the red liquid will expand and fill more of the tube. In other words, the top of the liquid will rise. We also so when the temperature is cold, the red liquid will contract and move down. Finally, students came to the conclusion that the temperature of the air in the room is called room temperature.
Love,
Mrs. L
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