0
What happens to the mercury in the thermometer when the air is cool?
Wiki User
∙ 13y ago
- In a Mercury thermometer, the level of mercury falls as the temperature of the air around it cools.
- A mercury thermometer has a bulb of mercury at the bottom and a thin tube above it with markings in Celsius degrees or Fahrenheit degrees. When the temperature warms, the mercury expands and rises up the tube. When the temperature cools, the mercury contracts and shrinks back toward the bulb at the bottom.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is in a thermometer and a barometer?
A thermometer measures temperature - most are now electric but they used to have alcohol or mercury in them. A barometer measures air pressure - they are now electric but used to have air in them (in a bellows with a spring).
What is a mercury filled glass tube that measures air temperature called?
All devices for measuring temperature are called thermometers. This includes those which use mercury and measure the temperature of the air.
Does a thermometer tell you air pressure?
No a barometer does a thermometer measures temperature
What is max thermometer and min thermometer?
An instrument used to find out the air temperature
What happens warm air hits the side of a mountain?
It gets cool beacause the air is thinner and cant hold as much heat.
What happens to the mercury in the thermometer when the air gets warm?
mercury explodes
How do you test the temperature of the air?
Get a thermometer - the mercury will rise or fall accordingly to the temperature of the air.
Is there air in a glass thermometer?
Yes, above the mercury or the other liquid.
What causes mercury in a thermometer to separate?
The cause is an udesired absorption of air.
What was the first liquid used in a thermometer?
The first thermometer was a tube filled with water and air.
Why the mercury can not rise in a lab thermometer if there is air in the glass tube?
Because the pressure of air may be greater than the pressure of the ascending mercury.
Why the mercury can not rise in a lab thermometer if there is air in glass tube?
Because the pressure of air may be greater than the pressure of the ascending Mercury.
What is mercury contained in a tube used to measure air temperature called?
thermometer
Why the reading of thermometer is taken when the mercury stop expanding?
The mercury will expand and rise up the thermometer tube until it reaches the temperature of the air around it. When it stops expanding, it is the same temperature as the air, and therefore gives an accurate reading.
What is in a thermometer and a barometer?
A thermometer measures temperature - most are now electric but they used to have alcohol or mercury in them. A barometer measures air pressure - they are now electric but used to have air in them (in a bellows with a spring).
What do you think happens when some air heats up and other air is cool?
What do you think happens when some air heats up and other air is cool?
What instrument measures changes in temperature?
Temperatures are measured by instruments called thermometers.The instrument usually used to measure air temperature is the maximum-minimum thermometer. It consists of a U shaped tube with bulbs at each end and mercury at the bottom. Air heats or cools the bulbs causing the air inside to expand or contract, therefore pushing or pulling the mercury upwards or downwards.There are 3 types of thermometer: minimum thermometer, maximum thermometer,and the "Six's thermometer" -- these record the temperatures over a period of time.it says in my book that a thermometer measures air temperature
