What are all things made up of?
Molecules
a balanced state in which a system is stable, such as when two or more samples are at the same temperature
Define temperature.
Temperature is a measure of the average kinetic energy of the molecules of a thing.
How does the temperature of the outer layer compare with the temperature of the inner layer before the layers touch? What will happen after the layers have been touching for a while?
The outer layer has more kinetic energy and a higher temperature before it touches.
After the two layers touch each other, the two layers will have similar kinetic energy and temperatures because they will reach an equilibrium
How do molecules move at a colder temperatures?
Define energy transfer.
To move energy from one place to another.
Object A has an average kinetic energy of 30 degrees Celsius. Object B has an average kinetic energy of 10 degrees Celsius. Which object has a higher temperature?
Object A has a higher temperature because that object has a higher average kinetic energy.
After the gears have been touching for a while, which of the two bottom gears will be cooler, and why?
The larger bottom gear will be cooler than the smaller bottom gear, because the energy that transferred to it was spread out over more molecules.
How do molecules move in warmer temperatures?
They move fast.
Describe an object's kinetic energy when it is at colder temperatures.
An object at colder temperatures will have low kinetic energy.
Object A has four molecules with an energy level of four. What is the average kinetic energy of the object?
Object A has the average kinetic energy of four.
Lin cooked a pot of soup, then put half the soup in the freezer for a while. Now the soup in the pot is hot, and the soup in the freezer is cold. What is the difference between the molecules of the soup in the pot and the molecules of the soup in the freezer?
Responses
The molecules of the soup in the pot are moving faster than the molecules of the soup in the freezer.
How do you find the average ?
Add all the addends then divide by the number of addends.
Energy is created.
False.
What happens when when two objects of different temperatures come in contact with each other?
Each object is going to try to reach an equilibrium.
Engineers design computers to cool down quickly so they do not break. What happens to the molecules in a computer when the temperature of the computer decreases?
The energy of the molecules in the computer decreases.
How would you describe an object's kinetic energy when it is hot?
The object's energy will be high.
Object one has four molecules and object two has three molecules. Which object has more total thermal energy?
Object one has more total thermal energy because it has more molecules .
True or False.
Energy isn’t created or destroyed. Therefore, as energy transfers, it increases in one part of the system as it decreases in another part of the system.
True.
How does the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch? What will happen after the pipes have been touching for a while?
Before the pipes touch, the front pipe is hotter than the back pipe. Once the pipes are touching, the front pipe will transfer kinetic energy to the molecules in the cooler back pipe until both pipes reach the same temperature, which will be in between their starting temperatures.