GRADE 8 - Lesson Title: Electromagnetic Waves
Textbook and Chapter: Green Chapter 22
Objectives
- Explain how electromagnetic waves are produced.
- Describe the properties of electromagnetic waves.
- Explain the differences among kinds of electromagnetic waves.
- Identify uses for different kinds of electromagnetic waves.
- Explain different methods of electronic communication.
- Compare and contrast AM and FM signals.
Set, Hook, Focus
How would meal time be different if you did not have a microwave oven in your home?
Learning Tasks
Content delivery will be via key notes slide show, with students utilizing note taking worksheets. Cooperative learning will be an integral part of the learning process (Think, write, pair, share).
- Section 1: Students will define all vocabulary words in chapter; Quick Demo - Text Page 635 - Magnetic Poles; Lab Demonstration - Text Page 636 - Visualize a field; Mini-Lab - Observing Electric Fields - Text page 637; Res. Page 20 - Key Terms; Res Page 25 - The Nature of Electromagnetic Waves; Text Page 638 - Section Assessment questions.
- Section 2: Draw the electromagnetic spectrum; Home Activity - Text Page 642 - Remote Control Lab; UVA vs. UVB waves - Text Page 643; Text Page 646 - NGO Visualizing the Universe; Res Page 18 - Directed Reading; Res Page 26 - The EM Spectrum; Text Page 647 - Section assessment questions.
- Section 3: Math Skills activity - Text Page 651; Res Page 27 - Using electromagnetic waves; Section Assessment questions - Text Page 653.
Evaluation/Assessment
- Class discussions, assessment questioning.
- Vocabulary Test Friday.
Quadrant D/ Gold Seal Lessons
- None this week.