Vocabulary
Energy something has because it is moving
Kinetic Energy
Hot water
Give an example of a heat transfer in our world.
Answers will vary
Energy transfers from....
hot to cold
A group of atoms joined together
Molecules
In the lab demo of staking the lab flasks, what happened when the hot water was on the bottom?
The hot and cold water mixed, hot water rises
When I put hot toast on a plate, the energy of the plate increases. What happens to the energy of the toast?
Its energy decreases
How do molecules move in hot and cold water?
Hot: fast Cold:slow
When 2 or more things become the same temperature
equilibrium
In the glow stick lab, why did the hot water make the glow stick shine brighter?
Hot water transfers energy to the glow stick making the molecules move faster in the glow stick and shine brighter.
Why do air conditioners make cities hotter?
Air conditioners take the hot air and pump it outside and send cool air into the room which then makes the air outside hotter and people run their AC more
Draw a model of how molecules move in hot or cold water.
See whiteboard for answer
Total kinetic energy of all the molecules in a sample
Which system had a higher equilibrium temperature? system Y or system X?
System Y
Does a kid or a snowman have more total kinetic energy? Explain how you know.
The kid because it has a higher temperature
What material was a thermal conductor in our penguin shelter lab?
Foil
Transfers heat quickly than other materials
Thermal conductor
Describe a lab you could do to show an energy transfer.
Answers will vary
Why do we need to design a shelter to keep penguins cold in South Africa? (What problem are the penguins facing?)
Due to climate change, the tempertures are increasing in South Africa making it hard for the penguins to live there
What materials are thermal insulators in our penguin shelter project?
Foam, felt, mylar