Definitions
Temperature in Canada is measured in...
What is degrees Celsius?
The three types of heat transfer
What is conduction, convection, and radiation?
Microwave ovens heat food by________.
What is radiation?
What are the three main states of matter?
Solid, liquid, gas
Temperature in the US is measure in _____.
What is Fahrenheit
Heat will always be transferred from something with a _____________ temperature to something with a ________________ temperature.
What is higher; lower?
Butter melting on a bread roll is _____________.
What is conduction?
As the temperature increases, particles move _________.
faster
The measure of the average kinetic energy of the particles in an object.
What is temperature?
A material through which energy can be easily transferred as heat
What is a conductor?
When you heat water on the stove, heat is passed to all the water molecules by_________ currents.
What is convection?
Particles in a substances are ___________ to each other.
attracted
Heat transfered due to the movement of matter (usually gases and liquids) due to differences in density that are caused by temperature variations
What is convection?
What is the total of all the kinetic energy of the particles of a substance
What is thermal energy?
A material that transfers heat poorly
What is an insulator?
What would happen if you were holding an iron rod in a flame for an extended period of time and why?
What is the whole iron rod would heat up (and eventually burn your hand) due to conduction?
Within a substance, all the particles are _________.
the same or identical
Any movement of matter that results from differences in density, such as a heating/cooling system
What is a convection current?
Which of the following has more thermal energy: a 250 mL glass of hot cocoa at 90 degrees Celsius or a 500 mL glass of hot coca at 90 degrees Celsius?
What is 16oz glass because it has more moving particles
How is the structure of a conductor different from that of an insulator? How does is structure compare to its function?
A conductor usually has particles arranged in an orderly way so that there is lots of contact between particles. This allows for them to pass heat energy from one particle to another.
If you are getting an apartment building during the hot summer months, would you rather be on the 1st or 2nd floor (financially/logistically speaking)? Why?
What is 1st floor because warm air rises due to convection. Therefore, you would have to run your air conditioner more, costing more money.
Tell three of the statements from the particle theory.
1. All matter is made of tiny particles, 2. The particles are in constant motion, 3. As the temperature increases, the movement increases, 4. There is space between the particles, 5. Particles of one kind are attracted to each other, 6.