Question

electromagnetic spectrum color by numbers
directions: answer each question by circling the correct choice. after you have completed all the questions color the picture using the assigned colors. for any unnumbered sections simply follow the pattern
question 1. which has the longest wavelength and, therefore, the lowest frequency/energy? choice a: radio waves (yellow), choice b: infrared (light blue), choice c: gamma rays (pink)
question 2. which section of the spectrum is the only one we can see? choice a: microwaves (yellow green), choice b: x - rays (pink), choice c: visible light (red)
question 3. as the frequency of an electromagnetic wave increases, the amount of energy in that wave _. choice a: increases (yellow orange), choice b: decreases (light blue), choice c: stays the same (purple)
question 4. how are electromagnetic waves different from mechanical waves? choice a: mechanical waves do not require a medium (yellow green), choice b: electromagnetic waves do not require a medium (blue), choice c: electromagnetic waves are longitudinal (purple)
question 5. which has the shortest wavelength and, therefore, the highest frequency/most energy? choice a: radio waves (light blue), choice b: visible light (pink), choice c: gamma rays (red orange)
question 6. which of the following has wavelengths longer than microwaves? choice a: radio waves (magenta), choice b: ultraviolet (pink), choice c: x - rays (green)
question 7. all waves carry _. choice a: matter (yellow orange), choice b: energy (yellow green), choice c: particles (pink)
question 8. which part of the spectrum is usually associated with heat because it has enough energy to excite electrons? choice a: visible light (green), choice b: ultraviolet (magenta), choice c: infrared (sky blue)
question 9. the electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of _. choice a: increasing amplitude (magenta), choice b: increasing energy and frequency (green), choice c: increasing wavelength (red orange)
question 10. which of the following has frequencies higher than ultraviolet rays? choice a: x - rays (orange), choice b: infrared (magenta), choice c: radio waves (pink)
question 11. which of the following lists the electromagnetic waves in order of decreasing frequency? choice a: infrared, microwaves, radio waves (light blue), choice b: ultraviolet, visible light, x - rays (aqua green), choice c: x - rays, microwaves, infrared (sky blue)
question 12. which of these is an example of a wave with a long wavelength and low frequency? choice a: ultraviolet (magenta), choice b: visible light (green), choice c: microwaves (pink)
question 13. what type of electromagnetic wave has a higher frequency than visible light and a larger wavelength than x - rays? choice a: gamma rays (yellow orange), choice b: ultraviolet (purple), choice c: infrared (pink)
question 14. electromagnetic waves all have the same _. choice a: speed and velocity (yellow green), choice b: frequency and wavelength (orange), choice c: speed and amplitude (pink)

Explanation:

1. Radio waves have the longest wavelength and lowest frequency/energy in the electromagnetic spectrum.
2. Visible light is the only part of the spectrum we can see.
3. Energy of an electromagnetic wave is directly - proportional to its frequency, so as frequency increases, energy increases.
4. Electromagnetic waves do not require a medium to travel, while mechanical waves do.
5. Gamma rays have the shortest wavelength and highest frequency/most energy.
6. Radio waves have wavelengths longer than microwaves.
7. All waves carry energy.
8. Ultraviolet is usually associated with heat as it can excite electrons.
9. The electromagnetic spectrum is ordered by increasing energy and frequency.
10. X - rays have frequencies higher than ultraviolet rays.
11. The correct order of decreasing frequency is: X - rays, ultraviolet, visible light, microwaves, infrared, radio waves.
12. Radio waves have long wavelengths and low frequencies.
13. Ultraviolet has a higher frequency than visible light and a larger wavelength than X - rays.
14. Electromagnetic waves all have the same speed and velocity in a vacuum.

Answer:

1. A. radio waves
2. C. visible light
3. A. increases
4. B. electromagnetic waves do not require a medium
5. C. gamma rays
6. A. radio waves
7. B. energy
8. B. ultraviolet
9. B. increasing energy and frequency
10. A. x - rays
11. C. X - rays, microwaves, infrared
12. A. radio waves
13. B. ultraviolet
14. A. speed and velocity