Heat 1
Heat is...
the flow/movement of thermal energy from hot to cold
What form of heat transfer travels via invisible waves?
What is 'radiation'.
The warmth you feel from a camp fire is an example of what type of heat transfer?
What is 'radiation'.
Heat can move (transfer) in how many ways? What are the transfers names?
What are 3 ways: conduction, convection, and radiation.
On your whiteboard draw a spoon and molecules inside that are at room temperature....show me how the molecules will be moving.....
______ moves, and creates heat energy through friction.
What is atoms and molecules
You should not touch the handle of a hot aluminum skillet because of what type of heat movement?
Heat moves in what direction?
What is 'from hot to cold'
If heat increases in an object the Kinetic Energy of the molecules ______________.
Increases
Draw a cup of hot soup molecules and show me how they are moving....
You should have long arrows....
When you microwave food, it cooks the food using?
Radiation
If you're standing on a black, asphalted parking lot on a hot summer day, what type of heat movement is there?
What is 'conduction'.
(Heat moved from hot pavement to your feet.)
Popping popcorn in an air popper is what type of heat transfer?
What is 'convection'.
When items get hot the molecules?
Spread out and move fast (causing expansion)
Draw the spoon going into the cup of hot soup and how the soup and spoon molecules move now....
The soup arrows should be smaller than before and the spoon molecules longer than before
What heat transfer requires heat to rise and condensate (cool)?
What is 'convection': warm air rises.
The steam rising up from a hot cup of cocoa is what type of heat transfer?
What is 'convection': warm air rises!
The steam you see is the warm air rising due to the heat of the liquid in cup.
The faster the atoms and molecules move inside an object...
What is 'the higher its temperature'.
After a spoon is left in hot soup for a long period of time both the spoon and the soup will become _____________.
The same temperature (thermal equilibrium)
Draw the spoon in the cup of soup show what all the molecules in the spoon and soup would look like after an hour..........
The arrows should be the same...
What does sunscreen do?
blocks radiation from the s (and UV rays).
A average of how fast atoms and molecules are moving is called...
What is 'temperature'.
What are the three states of matter? What is water called in these three states?
Solids, liquids, and gas
Ice, Water, Water Vapor
When molecules slow down they come together and get more ___________.
Dense (that is why when things cool from a gas state we call it conDENSation)
Describe the relationship between temperature and substance's molecules...