Lesson 1: Particles in Motion
What is another word for "motion energy"
Kinetic energy
What is the phase change called when liquid turns in to a solid?
Freezing
What type of heat transfer occurs when the Sun's rays warms the Earth?
Radiation
If an object has a LOW specific heat, does it take more or less energy to heat it up?
LESS energy
What is temperature?
Measure of kinetic energy
When there is an increase in temperature, the particle speed ______________.
Increases
Kinetic energy has to do with particle speed, while potential energy has to do with particle ____________.
Distance
What is the type of energy transfer that involves particle collisions?
Conduction
Thermal insulator
What is potential energy?
Stored energy
Which CONTAINS more energy? Less mass or more mass.
More mass
Which state of matter has the greatest potential energy?
Gas
What is the type of heat transfer that explain how magma flows: hot magma rises while cool magma sinks.
Convection
What color REFLECTS the energy?
White
What is thermal contraction?
When particle motion decreases and causes the volume of an object to decrease
Why do doors get jammed in the summer but fit properly in the winter?
Thermal expansion and contraction
What are the two types of vaporization (when liquid turns to gas)?
What is the direction that heat flows?
Name all 4 factors that affect thermal conductivity.
1. Type of material
2. Thickness (or mass)
3. Surface Area
4. Reflectivity vs. Absorbency
What is specific heat?
What is diffusion?
When particles move from an area of higher concentration to an area of lower concentration
When liquid turns in to solid, what is happening to the attractive forces?
Attractive forces are increasing.
What are the 3 types of energy transfers? And say what is what.
Conduction - heat transfer through particle collision
Convection - heat transfer through the movement of particles from one area to another
Radiation - heat transfer through electromagnetic waves
Why might a pan have a wooden handle instead of a metal one?
Because wood is a better insulator and takes up a longer time to heat. Which helps to protect your hand when holding a hot pan.
What is thermal equilibrium
When two materials in contact have reached the same temperature