Chemistry:Earth System #4 (Heat, Energy, and Temperature 2)

What is the definition of CONVECTION

warm fluid rises; cool fluid sinks

In nature, heat always flows from a:

warm object to a cold object.

A material was cooled from 100ºC to 40ºC. What is the temperature change?

60ºC

What is the BEST example of a conductor?

A metal bowl

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy. What material would be the coolest after being heated?

Carbon Steel

When thermal energy is added to a substance, the substance's particles move:

More rapidly at an increased distance from each other

You're holding hands with your best friend. Your friend's hands are REALLY warm and yours are really cold. After a few minutes, this has changed. How might you explain what happened?

The heat energy from your friend's hand transferred to your hand through conduction.

What would be the effect on the particles if more heat is supplied to the system?

They would speed up

A group of campers is sitting around a campfire. How is thermal energy being produced?

burning

People wear snowsuits to ________.

decrease how much heat leaves their bodies.

The transfer of thermal energy between objects of different temperatures is called...

heat

When you touch something that feels cold,

heat from your hand moves into the cold substance.

The heat from a lamp allows a lizard to remain warm. This is an example of which type of heat transfer?

radiation

A measure of the average kinetic energy of the individual particles in an object is called:

temperature

The temperature of a substance increases as___.

the average kinetic energy of its particles increases