Podcast
Questions and Answers
What is the speed of electromagnetic waves in a vacuum?
What is the speed of electromagnetic waves in a vacuum?
- 1x10^8 ms⁻¹
- 2x10^8 ms⁻¹
- 4x10^8 ms⁻¹
- 3x10^8 ms⁻¹ (correct)
What is the characteristic of electromagnetic waves that allows them to travel through a medium?
What is the characteristic of electromagnetic waves that allows them to travel through a medium?
- They do not require a medium (correct)
- They are longitudinal waves
- They require a medium
- They have a neutral charge
Which type of electromagnetic wave has the longest wavelength and lowest frequency?
Which type of electromagnetic wave has the longest wavelength and lowest frequency?
- Microwaves
- Visible light
- Infrared rays
- Radio waves (correct)
What is the relationship between frequency and energy of electromagnetic waves?
What is the relationship between frequency and energy of electromagnetic waves?
What is the characteristic of ultraviolet rays that makes them useful for killing bacteria?
What is the characteristic of ultraviolet rays that makes them useful for killing bacteria?
What is the characteristic of X-rays that allows them to penetrate most matter?
What is the characteristic of X-rays that allows them to penetrate most matter?
What is the highest point in a wave?
What is the highest point in a wave?
What is the lowest point in a wave?
What is the lowest point in a wave?
What is the energy carried by the wave shown by?
What is the energy carried by the wave shown by?
What is the point from one crest to another crest or one trough to another trough?
What is the point from one crest to another crest or one trough to another trough?
What is the term used for the X axis in waves?
What is the term used for the X axis in waves?
What is the relationship between wavelength, frequency, and energy of an electromagnetic wave?
What is the relationship between wavelength, frequency, and energy of an electromagnetic wave?
What is the term for the highest point in a wave?
What is the term for the highest point in a wave?
What represents the energy carried by a wave?
What represents the energy carried by a wave?
What is the term for the distance from one crest to another crest or one trough to another trough?
What is the term for the distance from one crest to another crest or one trough to another trough?
What is the term for the X-axis in waves?
What is the term for the X-axis in waves?
What is the result of a changing electric field?
What is the result of a changing electric field?
What is unique about the way electromagnetic waves travel?
What is unique about the way electromagnetic waves travel?
