Which statement correctly compares radio waves and microwaves?
Radio waves have shorter wavelengths and higher frequencies than microwaves.
Radio waves have longer wavelengths and higher frequencies than microwaves.
Radio waves have shorter wavelengths and lower frequencies than microwaves.
Radio waves have longer wavelengths and lower frequencies than microwaves.
The correct statement is:
Radio waves have longer wavelengths and lower frequencies than microwaves
To compare radio waves and microwaves and determine which statement is correct, you need to understand the basic properties of these electromagnetic waves. Here's a step-by-step guide on how to answer this question:
1. Understand the Properties of Radio Waves: Radio waves are a type of electromagnetic radiation with relatively long wavelengths and low frequencies. They fall within the frequency range of 30 kilohertz (kHz) to 300 gigahertz (GHz). They are commonly used for broadcasting radio and television signals.
2. Understand the Properties of Microwaves: Microwaves, on the other hand, are a type of electromagnetic radiation with shorter wavelengths and higher frequencies than radio waves. They fall within the frequency range of 300 megahertz (MHz) to 300 gigahertz (GHz). Microwaves are commonly used in household appliances like microwave ovens and for communication systems like mobile phones and satellite communications.
3. Compare the Wavelengths: Based on the properties mentioned above, it is clear that radio waves have longer wavelengths than microwaves. So, the statements mentioning that radio waves have shorter wavelengths compared to microwaves are incorrect.
4. Compare the Frequencies: Additionally, radio waves also have lower frequencies compared to microwaves. So, the statements mentioning that radio waves have higher frequencies compared to microwaves are also incorrect.
Now, using the knowledge gained from steps 3 and 4, we can conclude that the correct comparison between radio waves and microwaves is:
"Radio waves have longer wavelengths and lower frequencies than microwaves."
Therefore, the correct statement is: "Radio waves have longer wavelengths and lower frequencies than microwaves."