Why aerosol cans have warning Do not expose to high temperature and do not incinerable?
Aerosol cans contain chemical compounds that are extremely flammable. Exposing to high heat, or attempting to light these cans on fire can cause dangerous or even deadly explosions.
When you expose a thermometer direct sunlight is the thermometer measuring the temperature of the air or the Sun or something else?
Temperature of the moon varies greatly since it had no atmosphere. At the equator on the side expose to the sun, the temperature can reach up to 120 oC At the very same equator on the dark side, the temperature is -200 oC, quite higher than average temperature of the surrounding space of -270 oC because the moon still have some heat from the core deep inside its' crust. If the earth had no atmosphere…
There is no straight forward answer for this, Newton described this in his Law of Cooling. The rate of cooling (change in temperature) is proportional to the difference in temperature. Here is an example, let's say you shade a area on the ground, when you remove the shade and expose it to the sun, the rate of cooling will be rapid at first because the difference between the shaded area and the sun's radiative temperature…
Depending on the level of heat, the can could explode. The propellant could catch fire. It does vary according to the can. For example, aerosol whipped cream, with the propellant Nitrous Oxide, will just burst dangerously and noisily and cover everything with whipped cream. It is unlikely to catch fire. Paint, butane and lighter fluid are extremely dangerous to expose to heat. DO NOT EXPERIMENT WITH THIS!!!!!!!!!!
Goosebumps are a temporary phenomena generally lasting less than an hour. They are usually caused by a sudden change in temperature. Your hair keeps your head warm. If it is real cold and you shave your head, you will expose your shaved head to a sudden change in temperature. That could cause goosebumps. Other people might not have them.
Most changes between solid and liquid matter are reversible, especially if it was done by freezing you can just expose it to room temperature and the mercury will thaw and become liquid again. Or if you want to freeze it again, just freeze it by exposing it to the freezing temperature of mercury which is approximately -38.83 oC.