It is caused by solar radiation.
The mercury level rises in a thermometer when the temperature increases because heat causes the mercury to expand, pushing it up the tube. Conversely, the mercury level falls when the temperature decreases because the cooler temperature causes the mercury to contract, moving it down the tube.
The mercury in a thermometer expands and contracts as temperature changes. This expansion and contraction causes the level of mercury in the thermometer to rise or fall, providing a visual indication of the temperature.
because they are at room temperature exists
the heat and temperature that causes it to rise and fall.
That type of thermometer has mercury in it, which is very heat sensitive. When used for taking a temperature, the heat from the body causes the mercury to rise. The amount the level of the mercury rises is determined by the body's temperature; the higher the temp, the higher the mercury rises.
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.
The mercury in a thermometer rises because of thermal expansion. When the temperature surrounding the thermometer increases, the molecules of the mercury expand, causing it to move up the narrow tube of the thermometer.
The length of a mercury thread in a thermometer is not directly related to the temperature of the mercury. The temperature is denoted by the level that the mercury rises to in the calibrated tube. The length of the mercury thread only indicates the volume of mercury present.
Temperature affects the amount the mercury is spread out. Heat causes most liquids to expand, which is how a thermometer works. As heat around the glass protecting the mercury of the thermometer rises, the mercury expands and covers more room in the thermometer.
The freezing point of mercury is -38,8290 0C.The boiling point of mercury is 356,73 0C.The temperature of mercury indoor or outdoor is the temperature of the environment.
Mercury.
Mercury is the planet closest to the sun in our solar system. Its proximity to the sun causes its surface temperature to be extremely hot, and its orbit is the fastest of all the planets.