Energy and Matter Chapter 6 Lesson 1

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Energy and MatterChapter 6 Lesson 1

• Mr. Nigh
• Science
• 7

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Kinetic and Potential Energy

• What type of energy represents a soccer ball
  flying through the air?
• It is moving, so it has Kinetic Energy
• It is in the air, so it has Potential Energy.
• Why? Because it is attracted to the Earth
  due to Gravity

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• Mechanical Energy is the sum of the potential and
  kinetic energy of a flying soccer ball or any
  other object
• Thermal energy is the sum of the potential and
  kinetic energy of the particles that make up a
  material.
• The particles that make up solids, liquids, and
  gasses are in constant motion so
  they have Kinetic energy.

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• Solids
• Particle Movement

Examples
Chumbler - Properties of Matter
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• Liquids
• Particle Movement
  Examples

Chumbler - Properties of Matter
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• Gases
• Particle Movement Examples

Chumbler - Properties of Matter
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Temperature

• Temperature is a measure of the average kinetic
  energy of the particles that make up a substance
• The slower the particles are moving, the lower
  the temperature
• The faster the particles are moving,
  the higher the temperature

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Thermal Energy and Temperature

• If a frozen pond melts, both ice and very cold
  water are present.
• They have the same temperature.
• Thus, the particles that make up the ice and
  water have the same average kinetic energy
• However, they do not have the same thermal
  energy. The average distance between the
  particles that make up ice and
  water are different

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What is Heat

• Heat is the movement of thermal energy from a
  warmer object to a colder object.
• All objects have thermal energy, however you heat
  something when thermal energy transfers
  from one object
  to another.

Heat transfer from the cup to her hands is less
than the transfer to the air, because the
temperature difference is less
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• Thought Questions Lesson 1
• The sum of kinetic energy and potential energy of
  the particles in a material is _____________
• The difference between thermal energy and heat is
  _____________________
• How could you increase the kinetic thermal energy
  of a liquid?