Table of Contents
- 1 What happens when you put a thermometer in hot water?
- 2 When a mercury thermometer is placed in hot water?
- 3 How does a thermometer measure water temperature?
- 4 When the bulb of thermometer is placed in cold water the liquid inside the tube will?
- 5 How can you measure the temperature of hot water?
- 6 When to place the thermometer in the cup of hot water?
- 7 How to record the temperature of room temperature water?
What happens when you put a thermometer in hot water?
The way a thermometer works is an example of heating and cooling a liquid. When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. This results in movement up the thermometer.
Can you put a thermometer in hot water?
U put ur Thermometer in hot water,a thermal equilibrium is reached between the two and Mercury inside thermometer comes to equal temperature of water and get expanded or get risen to a particular height on a calibrated scale giving a reading of temperature required to expand mercury to that height.
When a mercury thermometer is placed in hot water?
It consists of a bulb containing mercury which is then attached to a narrow glass tube. As temperature rises, the level of mercury in the tube increases. This happens because the volume of mercury slightly increases with temperature.
Why water is not used as a thermometer liquid?
Water is not able to be used as a thermometer liquid because of its higher freezing point and lower boiling point than the other liquids in general. This range is very negligible as compared to other liquids like mercury which has a freezing point of about −39∘C and boiling point 356∘C.
How does a thermometer measure water temperature?
WATER TEMPERATURE
- Measure the water temperature by submerging the thermometer two-thirds below the surface of the water.
- Take the measurement in a central flowing location.
- Let the thermometer adjust to the water temperature for at least 1 minute before removing the thermometer from the water and quickly.
When a mercury thermometer is immersed in boiling water it shows an increase in temperature which of the following remains constant?
When the height of the mercury in the column remains constant, a mark is made. This mark is one reference point. The ice-water mixture is then heated to boiling and kept at that temperature while the height of the mercury in the column rises to a new constant level….
| Liquid | J/g°C |
|---|---|
| water | 4.18 |
When the bulb of thermometer is placed in cold water the liquid inside the tube will?
The liquid in the thermometer goes down when the thermometer is cooled because cooling makes the alcohol molecules of the liquid move more slowly. When they move more slowly, their attractions for one another are able to bring them slightly closer together.
Why mercury is used in thermometer but not water?
Mercury is the only one in liquid state at room temperature. It’s used in thermometers instead of water because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it’s used in a thermometer.
How can you measure the temperature of hot water?
Measure the beginning temperature of your hot water using a thermometer at the tap farthest from the water heater. Thermostat dials are often inaccurate. 2) Mark the setting, then turn down the thermostat. Mark the beginning temperature on your water heater thermostat with a marker, and then turn the thermostat down.
Which thermometer is used for boiling point of water?
A Celsius thermometer will measure the boiling point of water at 100° and its freezing point at 0°; a Fahrenheit thermometer will measure the same events at 212° for the boiling point of water and 32° as its freezing point.
When to place the thermometer in the cup of hot water?
You will need to place your thermometer in the cup of hot water at the same time the students do. Have students record the initial temperature of the control in their charts on the activity sheet, along with the initial temperature of their own cup of hot water. The temperature of the two samples should be about the same.
How can you tell if the washers cause the temperature to change?
The only way to tell if the washers cause the temperature to change is to have a cup of hot water without washers. Explain that you will have this cup of hot water, which will be the control. You will need to place your thermometer in the cup of hot water at the same time the students do.
How to record the temperature of room temperature water?
Pour about 30 milliliters of room-temperature water into the control cup. Place a thermometer in the cup and tell students the temperature of the water. Pour about 30 milliliters of room-temperature water into your Styrofoam cup. Place a thermometer into the water and record its temperature in the “Before” column in the chart on the activity sheet.
Why is the bulb of the thermometer made of thin glass?
The long stem of the thermometer with the markings for temperature read-out is a glass capillary (a very thin channel inside the glass tube) into which the mercury in the bulb can expand during the measurement, when the the temperature of the bulb increases . As soon as you stick the thermometer bulb into hot water, the glass bulb will expand.