Heat energy naturally flows from a ___________ substance to a _____________ substance until they are both __________
warmer to cooler, equal
T or F an ice cube has more thermal energy than a melted ice cube
False
How can you increase thermal energy in a system?
Adding heat and doing work on a system adds energy to the system (1st law of thermodynamics)
Heat engines use _________ and use it to do ___________
heat and work
Freezing occurs when a substance ____________ thermal energy.
What is loses.
What has more thermal energy, a pot of boiling soup or the artic ocean?
The artic ocean.
When gas loses a sufficient amount of thermal energy, it will change into a ______________.
What is liquid.
A refrigerator is a device that uses an outside energy source to transfer thermal energy from a __________ area to a ___________ area.
What is cool to warm.