Thermal Energy
warm ---> colder
The kinetic energy of an object depends on _____ and _________.
mass; speed
The potential energy of an object depends on its _____ and ______.
Mass; height
The Law of Conservation of Energy states that energy can neither be _____ or _____.
Created;destroyed
This eating utensil used to be considered "blasphemous" and a sign of witchcraft.
Forks
Which type of thermal energy transfer is occurring if you boil a pot of water?
Convection
At which of the following points would an object have the most kinetic energy?
A) At the top of a hill
B) Halfway down a hill
C) At the bottom of a hill when it is still in motion
C
At what point on a slide does someone have the most potential energy?
At the top
The Law of Conservation of Energy does allow for energy to change ______.
forms
These birds was once worshipped as gods by the Mayan people.
Turkeys
What type of thermal energy transfer is occurring if the counter feels hot after you've place a hot cup of coffee on it.
Conduction
Coaster A has a 114 meter drop and Coaster B has a 108 meter drop. If your goal is to ride the coaster that will have the most kinetic energy, which coaster should your ride? Why does that coaster have the most kinetic energy?
Coaster A - Because the hill drop is higher, it will have more speed. This directly affects the kinetic energy.
How do potential energy and kinetic energy relate to each other?
The more potential energy an object has, the more kinetic energy it will have.
When you bounce a ball, at what point is energy being transformed from kinetic energy to potential energy?
As it bounces back up.
Bunnies
Why type of thermal energy transfer is occurring if you sit near a hot fire?
Radiation
Refer to the graph on the board. What conclusions can you make about the relationship between kinetic energy and speed?
When one goes up, the other goes up.
Speed increases slowly at first, then quickly.
If your total energy is 20,000 J and you have 15,000 J of kinetic energy, how much potential energy do you have?
5,000 J
When you drop a basketball, it does not bounce to the height it was originally dropped at. Is energy lost? Why or why not?
No - Law of Conservation of Energy
Who was the first president to appear on television?
Franklin D. Roosevelt - during the 1939 World's Fair
Describe the movement of thermal energy when you place an ice cube in a warm glass of water.
Thermal energy goes from the warm water to the ice cube.
There are three rollercoasters listed below, along with their hill drop heights and speed. What relationship do you see between the hill drop heights and speed of the coasters?
Coaster 1 - 100m ; 165mph
Coaster 2 - 75m; 92 mph
Coaster 3 - 65m; 87 mph
As the hill drop height increases, so does the speed. Speed and height have a positive correlation.
Multiple apples with the same mass are hanging from a tree. Give an example of an apple that would have more potential energy than an apple that is hanging 10 meters high.
Any apple higher than 10 meters high.
Describe the energy transformation that occurs when you eat food and then go on a bike ride.
When you eat food, it is chemical energy for your body. When you begin to ride your bike, it transforms to kinetic energy.
Name 2 foods that were invented/became popular at the St. Louis World's Fair in 1904.
Hamburger, hot dog, peanut butter, iced tea, the club sandwich, cotton candy (AKA Fairy Floss), ice cream cones, Dr. Pepper, Jell-O
** Note - some of these were invented before the fair, but were made popular due to the fair.