Unit E: Matter and Energy
Chapter 2: Heat-Energy on the move
Chapter 2 Introduction
Chapter 2, Lesson 1: How Does Heat Affect Matter?
Summary
Energy is the ability to cause change. Energy is needed to move something from one place to another. The total energy of motion of the particles in matter is thermal energy. Temperature is a measure of the average motion of these particles. Adding thermal energy causes the particles of matter to move faster. More matter equals more particles. More particles mean more total thermal energy. Click on the button below to watch and interact with a video about . |
Chapter 2, Lesson 2: How Can Thermal Energy Be Transferred?
Summary
Heat is the transfer of thermal energy from one piece of matter to another. Thermal energy naturally moves from warm matter to cool matter. Conduction and convection need moving particles of matter to transfer thermal energy. Thermal energy is transferred as infrared radiation through matter and empty space. |
Chapter 2, Lesson 3: How Is Thermal Energy Produced and Used?
Summary
Much of the thermal energy used by people today comes from burning fuels that contain carbon. Energy given off by the sun is called solar energy. Solar energy can be used to heat homes and businesses, heat water, and cook food. Most processes that use energy also produce thermal energy. If this thermal energy isn't useful, it is waste heat. |
For Review
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