Temperature Flashcards
What is temperature?
The hotness/coldness of a substance
How is temperature measured?
A thermometer
What type of thermometer is used in Meteorology?
Mercury Thermometer
List the 3 scales of temperature
Celsius
Fahrenheit
Kelvin
What is the boiling/freezing points on the Celsius scale?
0
100
What is the boiling/freezing points on the Fahrenheit Scale?
32 = Freezing
212=Boiling
What is the boiling/freezing points on the Kelvin scale?
273= Freezing
373=Boiling
-273 = absolute zero
How do you convert Celsius to Fahrenheit?
9xC ➗5 +32
How do you convert Fahrenheit to Celsius?
5(F-32) ➗9
Where does the Earth’s source of Heat come from?
The sun
What wave band does the sun radiate on?
VHF
What is the suns energy absorbed by before reaching the earth?
- Ozone
- Water vapour
- Scattered by solid particles in the air
- Reflected by cloud/snow/ice
How much of the suns energy reaches the earth?
Half
What is incoming radiation called?
Insolation
What is terrestrial radiation?
The atmosphere being warmed by the energy emitted by the earth.
What is specific heat capacity?
The heat required to raise the temperature of 1kg through 1 degree
Is specific heat capacity constant?
No, varies from substance to substance.
How needs how many more times to raise its heat the soil?
5
During the day the land will heat up more than the sea does. At night land cools quicker than the seas.
True or False?
True.
List the 3 ways in which heat is transferred
Radiation
Conduction
Convection
What is radiation?
Transfer of heat between bodies that are not in contact, without hearing the intervening space.
What is conduction?
Transfer of heat between bodies in contact with each other, without movement.
What is convection?
Transfer of heat by vertical movement.
Air is a poor conductor.
True or False?
True.
What factors effect diurnal variation?
1) Surface (variation greater over land than sea)
2) Wind Speed(causes turbulence spreading the cooling effect)
3) Cloud(reduces heat loss)
What is an inversion?
When temperature increases with height
What is an isothermal later?
When the temperature remains the same with height.
