1. Nature of Electromagnetic Waves
Chapter 3.1

2. Noteworthy Vocab. Electromagnetic Wave Radiant Energy Forces & Fields
Magnetic & Electric Fields
Atoms
Protons, Electrons, Neutrons

3. Wave “Rewind” Waves transfer Energy without transferring Matter.
Mechanical Waves transfer energy by making particles of matter collide with one another.
Ex: Sounds waves, Waves in ocean
Mechanical Waves can’t travel in space
How do you transfer energy through empty space? Ex - Energy from Sun

4. Forces & Fields Earth has a force field = Gravitational Field
Force is exerted on mass of object.
Electromagnetic waves is produced by charged particles in motion.
Electromagnetic Wave = Electric field + Magnetic Field

6. Magnetic Fields Magnets are surrounded by a magnetic force field.
Magnets exert magnetic force on other magnets & magnetic materials.
Magnetic fields cause magnetized materials to line up along magnetic lines.

8. Electric Fields Atoms contain protons, electrons, & neutrons.
- Protons & Electrons have electric charge
Protons => Positive;
Electrons => Negative
A particle with a charge is surrounded by an electric field.
Electric field exerts a force on other charged particles.

11. Making Electromagnetic Waves
Moving/Vibrating a charged particle back and forth causes changing electric and Magnetic Fields in many directions.
Ex: Electron