HeatEnergy on the Move

1
Heat-Energy on the Move

• Does Heat Affect Matter?

2
Fast Facts about Heat

• The boiling point is the temperature at which a
  substance changes from a liquid to a gas.
• How does the movement of the particles change as
  it nears the boiling point?

3
Fast Facts about Heat

• The boiling point is the temperature at which a
  substance changes from a liquid to a gas.
• How does the movement of the particles change as
  it nears the boiling point? The particle move
  faster and faster until they escape from the
  liquid.

4
Fast Facts about Heat

• The freezing point is the temperature at which a
  substance changes from a liquid to a solid.
• How does this happen?

5
Fast Facts about Heat

• The freezing point is the temperature at which a
  substance changes from a liquid to a solid.
• How does this happen?
• The particles move slower until they are close
  together.

6
Lets Learn About Matter and Energy

• What is energy?
• What is kinetic energy?
• What is thermal energy?
• What is temperature?

7
Lets Learn About Matter and Energy

• What is energy?
• Energy is the ability to cause a change.
• Energy is the ability to do work. Our bodies
  use food to make energy so we can play and read
  and clean our rooms. The other types of energy we
  use help make our lives easier and more
  comfortable.

8
Lets Learn About Matter and Energy

• What is kinetic energy?
• Kinetic energy is the energy of motion.
• Objects gain kinetic energy as they move.

9
Lets Learn About Matter and Energy

• What is thermal energy?
• Thermal energy is the motion of particles in
  matter. Thermal means heat . We feel the
  thermal energy of particles in matter as heat.
  When you add thermal energy to matter the
  particles move faster.

10
Lets Learn About Matter and Energy

• What is temperature?
• Temperature is the measure of the average
  energy of motion of particles in matter. When
  the particles in the air move more slowly, they
  have less thermal energy.
• How do we measure temperature?
• A thermometer is used to measure temperature.

11
Lets Review

• What does temperature measure?
• What happens if you add thermal energy to matter?
• If the particle in matter move faster, what has
  happened to the temperature?
• When thermal energy is removed from water, what
  happens to the temperature?

12
Temperature measures the average energy of motion
of the particles in a piece of matter.
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2. The particles will move faster.
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3. The temperature rises
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4. The temperature goes down.