Chapter 3 Flashcards
What is heat?
A form of energy that can be transferred through solids, liquids and gasses
What does heating a substance do to it?
Adds energy to the particles
What happens if the temperature increases?
The particles move faster and the substance expands
How are the particles in solids?
Closely Compact
How are the particles in liquids?
Compact, but move nad flow over each other
How are the particles in gasses?
Free to move around, not bound
How does the states of matter change?
Sufficient heat
What are the types of energy transfer?
Conduction, convection and radiation
How does conduction happen?
When the vibrations of heated solids move across the solid
What are substances that transfer heat easily called?
Conductors
What are substances that transfer heat poorly called?
Insulators
How does radiation happen?
When heat is transferred via invisible waves. It does not rely on particles, so it can travel through empty space
How does convection happen?
Occurs by areas of a liquid or gas heating or cooling greater than their surroundings
Why is shade cooler?
The radiation waves are blocked
What happens when radiated energy hits a surface?
The heat is absorbed, reflected or transmitted
