Science 10H Block 2: Temperature

Hi Everyone,

I hope the lessons are a little bit more clear today. One thing that we mentioned but didn't go into the details has to do with Kelvin. Dora mentioned last class that it makes no sense to use a negative temperature; does that mean that an object with negative degrees Celsius have negative kinetic energy? That is a very good idea, which is why scientists prefers the use of Kelvin, which uses absolute zero as the reference temperature. At absolute zero, particles do not move, so that they indeed have no kinetic energy. Using Kelvin ensures that there is no "negative temperature", thus no "negative kinetic energy"!

Here is the link to today's definitions:

https://docs.google.com/document/d/1y_oGkKJdmXdZHWSwtR6MDK36xwra2vDYY73iheMJylY/edit?usp=sharing

Here is the link to the Plicker questions today:

On average, do the particles in hot water have more kinetic energy than those in cold water?

A.More

B.Less

C.They have the same average amount of kinetic energy

D.Not enough information to answer

On average, do the particles of water at room temperature in a cup have more kinetic energy than those water particles at room temperature in a bath tub ?

A.More

B.Less

C.They have the same average amount of kinetic energy

D.Not enough information to answer

On average, do the particles in helium gas have more kinetic energy than those in hydrogen gas, if they have the same temperature?

A.More

B.Less

C.They have the same amount of average kinetic energy.

D.Not enough information to answer.

On average, do the particles of water at room temperature in a cup have more kinetic energy than those water particles at room temperature in a bath tub ?

A.More

B.Less

C.They have the same average amount of kinetic energy

D.Not enough information to answer

On average, do the particles water at 0C have more kinetic energy than those of ice at 0C?

A.More

B.Less

C.They have the same average amount of kinetic energy

D.Not enough information to answer

On average, do the particles in hot water have more kinetic energy than those in cold iron bar?

A.More

B.Less

C.The have the same average amount of kinetic energy

D.Not enough information to answer

Don't forget to hand in all of your assignments by Thursday!

Mr. Tung