Thermal Energy Unit 4: Quiz 1 Flashcards
What is temperature?
The measure of average kinetic energy of molecules
What is kinetic energy?
the energy of motion/movement
What is thermal expansion?
temperature increase causes molecules to move faster and spread apart
What is thermal contraction?
temperature decrease cause molecules to move more slowly come closer together
What is potential energy?
the measure of attraction between molecules
What is thermal energy?
potential + kinetic energy
When a liquid is cooled, the liquid molecules….
B. move slower than before
Molecules are in constant motion (True/False)
True
The amount of thermal contraction and expansion depends on?
the type of material and the amount of temperature change
Kelvin
temperature scale based on absolute zero
Celsius
metric temperature scale in which 0 = freezing and 100 = boiling
Inversely Proportional
potential energy relationship to distance between molecules
Rank states of matter based on their potential energy
Highest - solid (least space between molecules, Medium - liquid, Lowest - gas (most space between molecules
Compare a bucket of water at 25 degrees to a cup of water at 25 degrees
The bucket has more thermal energy due to its highest amount of mass and their temperatures are equal
