Question

notes: electromagnetic spectrum waves
characteristics of waves
wavelength:_________
frequency:_________
higher frequency = ______wavelength energy
examples of electromagnetic waves:
radio waves:_________
microwaves: _________
infrared: _________
visible light: _________
x - ray: _________
gamma rays: _________

Explanation:

To fill the table, we use concepts from Physics (Electromagnetic Spectrum):

Characteristics of Waves:

• Wavelength: Distance between successive crests/troughs (units: meters, nanometers, etc.).
• Frequency: Number of wave cycles per second (unit: Hertz, \( \text{Hz} \)).
• Higher Frequency = Shorter Wavelength Energy (from \( c = \lambda f \), where \( c \) (speed of light) is constant; \( \lambda \propto \frac{1}{f} \); energy \( E = hf \), so higher \( f \) means higher energy).

Examples of Electromagnetic Waves:

• Radio Waves: Longest wavelength, lowest frequency (e.g., AM/FM radio, TV signals).
• Microwaves: Used in microwaves (heating food), radar, satellite communication.
• Infrared (IR): Heat transfer (e.g., remote controls, thermal imaging).
• Visible Light: Detected by human eye (ROYGBIV: red to violet; red = longer \( \lambda \), violet = shorter \( \lambda \)).
• X - Ray: Penetrating (e.g., medical imaging, airport security).
• Gamma Rays: Highest energy (e.g., nuclear reactions, cosmic sources).

Answer:

Characteristics of Waves	Wavelength: Distance between successive wave crests/troughs (e.g., m, nm) <br> Frequency: Number of cycles per second (Hz) <br> Higher Frequency = Shorter Wavelength Energy