STATES OF MATTER
Particles in this state can escape a container if the lid is opened
GAS
When ice turns into water
What is heat?
The transfer of energy from the particles of a warmer object to the particles of a cooler object
The air popper was an example of which kind of heat transfer?
CONVECTION
What is thermal contraction?
A decrease in the volume of a substance caused by cooling
How do humans/animal stay cool?
Answers may vary... Sweating, panting, using air conditioning, fans, sitting in the shade
Particles in this state have a very strong bond of attachment
SOLID
When water turns into water vapour
EVAPORATION
What is Temperature?
A measure of the average kinetic energy of the particles of a substance
The whirlypop on the stove was an example of which kind of heat transfer?
CONDUCTION
What is Conduction?
Transfer of thermal energy by two substances in contact with eachother
Name three things people do to stay warm.
Wearing clothing, exercising or burning fossil fuels.
If you are moving from a solid to a gas are you adding heat or taking it away?
Adding Heat
When water vapour turns into water
CONDENSATION
What is Transfer?
When something moves to another place
The microwave popcorn was an example of which kind of heat transfer?
RADIATION
What is Convection?
Transfer of thermal energy from one fluid to another
Without the sun's radiation Earth would would be WAY too cold for life to survive.
Particles in this state are vibrating close together
SOLID
When water turns into ice
FREEZING
What is thermal expansion?
An increase in the volume of a substance caused by heating
Which spoon conducted thermal energy the best?
METAL
What is Radiation?
Transfer of thermal energy through electromagnetic waves
In our matter on the move experiment - how did the three temperatures of water demonstrate particle theory?
- The hotter water mixed faster because when particles are warmer or energy is added, they move faster
Particles in this state slip and slide over each other as they move around
LIQUID
When you move from Water Vapour to water to Ice what is happening
Energy is being taken away
What is kinetic energy?
Energy that all moving objects possess, particles have more kinetic energy move faster
Which spoon was the best Insulator?
Plastic
What does R Value Mean?
It is a rating of thermal resistance. The higher R value, the less conductive and more insulative it is.
What are the 5 points of the particle theory?
All matter is made up of tiny particles
Particles have spaces between them
Particles are moving all the time
Particles move faster when they are heated
Particles attract each other