Lesson 2: Waves of the Electromagnetic Spectrum Essential Questions: Unit: Sound and Light Lesson 2: Waves of the Electromagnetic Spectrum Essential Questions: 1.) How do electromagnetic waves compare? 2.) What makes up the electromagnetic spectrum?

What makes up the electromagnetic spectrum? The electromagnetic spectrum is the complete range of electromagnetic waves in increasing frequency.

Lowest frequency and lowest energy Highest frequency and highest energy

Types of Electromagnetic Waves Example of Use 1. Radio waves Carry signals for radio programs

Types of Electromagnetic Waves Example of Use 2. Microwaves Detect objects (radar)

Types of Electromagnetic Waves Example of Use 3. Infrared Rays Show regions of different temperatures (thermograms)

Types of Electromagnetic Waves Example of Use 4. Visible light Waves that can be seen

Types of Electromagnetic Waves Example of Use 5. Ultraviolet rays Produce vitamin D

Types of Electromagnetic Waves Example of Use 6. X-rays To look at bones and teeth

Types of Electromagnetic Waves Example of Use 7. Gamma rays Examine the body’s internal structures