Which way did they go?
_________ substances transfer energy to _________ substances
What is hot to cold?
Is there such thing as a cold or hot molecule
False (teacher needs to explain something here)
_____ air rises
Hot
If I have 4 molecules with 100 kJ of energy, what is the total kinetic energy of the system?
400kJ
is a group of atoms
What is a molecule
__________ energy systems receive energy from ________ energy systems
What is lower and higher?
Taking temperatures with a thermometer is actually measuring this
What is kinetic energy or molecular movement
________ air sinks
Cold
If I have two objects touching what is their total kinetic energy?
What is the sum or total of both systems?
________ can never be created or destroyed
What is matter?
this makes molecules move more slowly
What is cold or decrease in kinetic energy?
The sum of all energy in a system
total kinetic energy
These objects have less density or their molecules are closer together.
What are colder objects?
Which has a greater total kinetic energy:
object 1 (2 molecules @ 10 kJ) + object 2 (2 molecules @ 5 kJ)
or
object 3 (8 molecules @ 3 kJ) + object 4 (2 molecules @ 5 kJ)
What are objects 3 + 4
this make molecules move faster
What is heat or more kinetic energy?
heat is another form of ________ energy
What is kinetic?
These objects have less density or their molecules are further apart
Hot objects
The total energy of the universe is constantly changing, true or false
False! Energy can neither be created or destroyed.
__________ can never be created or destryoed, instead it is transferred from molecules to other molecules
What is energy?
molecules stop transferring energy in this state
What is equilibrium?
When all of the molecules have the same amount of energy or kilojoules
What is equilibrium?
This is the place on earth that has recorded the highest temperatures ever! 134 degrees farenheit
Where is Death Valley, California.
If I have two objects touching, the first object having 4 molecules at 100 kJ and the second object having 6 molecules at 25 kJ; what is the average kinetic energy?
what is 550/10 or 55 kJ?