Science Unit 3: Lesson 1- Particles in Motion

The study of heat..

• random motion
• thermal expansion
• temperature
• thermodynamics

An increase in a material's volume when the temperature is increased..

• random motion
• thermal expansion
• diffusion
• temperature

The movement of substances from an area of higher concentration to an area of lower concentration..

• random motion
• thermal expansion
• diffusion
• temperature

Energy due to motion..

• kinetic energy
• thermal contraction
• random motion
• temperature

Movement in all directions and at different speeds..

• kinetic energy
• thermal contraction
• random motion
• temperature

The measure of the average kinetic energy of the particles in a material..

• kinetic energy
• thermal contraction
• random motion
• temperature

A decrease in a material's volume when the temperature is decreased..

• kinetic energy
• thermal contraction
• random motion
• temperature

The process in which a solid changes directly to a gas.

• water vapor
• sublimation
• melting point
• temperature

As particles gain energy, they begin to move differently. How do particles move as they change states from a solid -- to a liquid --to a gas.

• particles vibrate and begin to move faster and farther apart
• particles shake and they begin to slow down and move closer together
• particles are compacted and mostly stay in one place
• particles begin to vibrate and move toward one another

As particles lose energy, they begin to move differently. How do particles move as they change states from a gas-- to a liquid --to a solid.

• particles vibrate and begin to move faster and farther apart
• particles shake and they begin to slow down and move closer together
• particles are compacted and mostly stay in one place
• particles begin to vibrate and move toward one another