Phsyics : Heat and Temperature

What is heat?

Is a from of energy which is transferred from one body to another as a result of the diffrence in temperature

Temperature

Is how hot or cold a substance is.

Si unit for temperature

Kelvin

Temperature Scale

A system used for measuring temperature quantativly

What is a fixed point?

Is a standard degree of hotness which can be reproduced

An example of fixed point is

Melting point of pure ice

Celsius Scale lower fixed point

0°c

What is a lower fixed point/ice point

Defined as the temperature of pure melting ice at standard pressure.

Celsius Upper fixed point/steam point

The temperature of steam above water is boiling at standard pressure. (100°C)

Fahrenheit upper fixed point

212°F

Fahrenheit L.F.P

32°F

1°C is equal to how much in Fahrenheit

5/9

How many equal intervals are there in the Fahrenheit scale?

180

The formula to convert °F to °C

5(°F - 32)/9

°C to°F

F= 9(θ)/5+32

Caloric theory of heat

States thar heat was an invisible, indestructible substance whuch would combine with matter and raise its temperature.

Kinetic theory of heat

That all atoms have some form of motion and heat is this energy that give the atoms its motion

Joule's experiment

a calorimeter was used to measure the heat produced by a falling weight. He found that a specific amount of mechanical work always produced the same amount of heat. This led to the law of conservation of energy, which states that energy cannot be created or destroyed, only converted.

Absolute 0

Is the temperature at which all the molear motion is presumed to stop due to heat being removed.

What is the Lower fixed position for Kelvin

Is the temperature whuch water exists in all 3 states at standard pressure

Value of triple point of water

273 Kelvin (K)

Formula for Kelvin to Celsius

θ= T-273

Celsius to Kelvin

T=θ +273

Thermal Expansion

It occurs when an object explands when heated and contracts to its original shape when the object looses this heat.