Kinetic and Potenial
What kind of energy transformation occurs on a pool deck during a hot day
What is light (radiant) energy to thermal energy
What is the name for materials that do not conduct heat?
Insulators
Heat transfers from _______ to _______ objects.
warmer, cooler
or
cooler, warmer
What is warmer to cooler
This term is the amount of energy it takes to increase the temperature of 1 gram of a substance by 1 degree Celsius.
What is specific heat?
Kinetic energy has to do with objects in __________
What is motion
What type of energy transformation occurs when you turn on a light?
What is electrical energy to light (radiant) energy
When you pick up a cold soda can, the heat leaves your hand through this type of transfer.
Conduction
In terms of specific heat, describe insulators vs. conductors
Insulators: High specific heat
Conductors: Low specific heat
The law of ___________ says that energy can neither be created nor destroyed
What is conservation of energy
What do the flat spots in a heat curve represent?
Phase changes
When something heats up, the molecules move:
a. faster
b. they don't change speed
c. slower
a. faster
I have frying pans made of the three following materials: aluminum, glass, and steel.
Which one do I choose if I want something that heats up quickly and cools back down quickly?
Steel (lowest specific heat)
Kinetic and potential energy are both considered this type of energy
Mechanical energy
When energy transforms from one form to another, the system always experiences a loss of heat.
True or false
True!
What is the energy transformation that occurs when an atom is split?
_______ energy ---> _______ energy ---> electrical energy
nuclear --> thermal
Macaroni swirls around in a pot of boiling water. This is an example of what?
convection
I want to bake a loaf of bread, and I need a pan with a material that takes a while to heat up and will hold it's temperature for a long time.
Do I want something with a low or high specific heat?
High specific heat
Takes longer to heat up, and longer to cool down.
Describe what is occurring with kinetic energy and potential energy as temperature increases on a heat curve.
Kinetic energy is increasing and potential energy is remaining constant.
Explain how a fire can be an example of conduction, convection, and radiation
Conduction: Heat transfers directly to an item
Convection: Heat warms the surrounding air, causing it to rise
Radiation: Heat is emitted through infrared waves
In conduction, heat moves from areas that are ________ to areas that are _________.
a. hotter, colder
b. colder, hotter
Oven mitts have a high specific heat. Why are they used for getting hot items out of the oven?
They are insulators because they do not conduct heat well.