Vocabulary
the measure of how hot or cold something is
what is temperature?
Mrs. Taunton heats up water every morning for her tea. As the water heats up, are the water molecules gaining or losing kinetic energy?
(Answer does not have to be in the form of a question)
The molecules are gaining kinetic energy.
True or False:
When you add freezing cold ice to warm water, the energy of the ice is transferring to the water.
False!
The energy would transfer from the water to the ice because energy travels from hot to cold!
When Ms. B uses a hot iron on her pants to get wrinkles out, this type of heat transfer is occuring.
What is conduction?
Fill in the blank:
As objects increase in heat, the object will (expand/contract). This happens because...
As objects increase in heat, the object will expand. This happens because as the molecules increase in speed, the space between them increases, causing a slight increase in size of the object.
the energy that an object has because it is moving
what is kinetic energy?
Nina is cooking rice in a pot. When she leaves the pot on the stove for a while, the temperature of the rice increases. What is happening to the energy of the molecules of the rice as the rice's temperature increases?
(Answer does not need to be in question form).
The energy of the molecules in the rice increases.
True or False:
Thermal Energy is also called average kinetic energy
False!
Thermal energy is also called total kinetic energy
Mrs. DiPaolo and Mrs. DiMuro are cooking pasta in boiling water. Mrs. DiPaolo uses a metal spoon to mix the pasta, then Mrs. DiMuro uses a wooden spoon. They notice that afterward, Mrs. DiPaolo's spoon is much hotter than Mrs. DiMuro's. Why might this happen?
(Answer does not have to be in the form of a question)
The metal spoon is a better conductor of heat than the wooden spoon.
Shivering helps us warm up when we are cold because...
Shivering helps us warm up when we are cold because as you rapidly move, you're generating heat to warm yourself up.
the moment when two objects hit eachother
what is a collision?
Multiple Choice:
Charles is conducting an experiment where he has to freeze different liquids - soda, coffee, water, and juice. At which temperature can he expect the water to freeze?
A. 0ºF
B. 32ºC
C. 0ºC
The water will freeze at...
C. 0º Celsius
Multiple Choice:
Energy transfer occurs when...
A. Molecules bond to one another
B. Energy is created and destroyed
C. Molecules collide with one another
D. Naturally for no reason
Energy transfer occurs when
C. Molecules COLLIDE with one another
Info about the natural world that is used to support or go against a claim.
What is evidence?
Sweating helps cool down your body because...
Sweating helps cool down your body because when the sweat on your skin evaporates, heat is transfered from your body to the surrounding air, thus lowering your body temperature
a set of interacting parts forming one complex whole
what is a system?
The are conditioner absorbs the warm air from the room and transfers it outside.
This number is the average kinetic energy of these molecules:
(5) (10) (5) (3) (4) (7) (1)
What is 5?
Explain why a pot of water on a stove gets hotter, but the handle of the pot stays cool.
The pot is made of metal, a good conductor of heat, and the handle is made of plastic or rubber, poor conductors of heat.
Why does a person feel colder on a windy day than a day without wind, even if both days are the same temperature?
As wind blows across our bodies it takes the heat we naturally emit and blows it away from our bodies. The faster the wind speed the faster our body heat is taken away and the colder it feels.
to reach a conclusion using evidence and reasoning
what is "to infer"?
Amy is comparing the total kinetic energy of 3 samples:
Sample A - (3) (4) (2) (7) (4)
Sample B - (1) (9) (3) (4) (2)
Sample C - (10) (2) (4) (3) (5)
Which sample can she expect to have the lowest total kinetic energy?
Sample C has the lowest total kinetic energy (19)
Sample A - 20
Sample C - 24
This occurs when the temperatures of two objects balance out after heat transfer.
What is equilibrium?
When something has the ability to make things move or change in the future, it has this.
What is potential energy?
Explain how thermal energy and heat transfer relate to the formation of clouds.
HINT - think about the stages of the water cycle.
Since the air higher in our atmosphere is cooler than the air closer to the surface, the air molecules travel from the warmer air to the cooler air (evaporation). As more water evaporates, the water molecules clump together to form clouds (condensation).