Question

part 4: true or false

1. as you move along the spectrum, radio to gamma waves, the wavelength decreases in size (gets smaller)

a. true
b. false

1. a wave with a large wavelength will have a low frequency and low energy.

a. true
b. false
part 5: chart
directions: complete the blank sections of the chart using the information provided

part 6: picture
directions: use the picture below to answer questions 1 - 3.
the electromagnetic spectrum

1. which wave has the most energy?____________________
2. which wave has the least energy?____________________
3. which wave has the longest wavelength?____________________

Explanation:

• Part 4, Question 1: In the electromagnetic spectrum, as we move from radio waves to gamma waves, the wavelength decreases. This is a fundamental property of the electromagnetic spectrum.
• Part 4, Question 2: The relationship between wavelength (\(\lambda\)), frequency (\(f\)), and energy (\(E\)) is given by \(c = f\lambda\) (where \(c\) is the speed of light) and \(E=hf\) (where \(h\) is Planck's constant). A large wavelength implies a low frequency (\(f=\frac{c}{\lambda}\)), and since \(E\propto f\), a low - frequency wave has low energy.
• Part 5: Using \(c = f\lambda\) and \(E = hf\), when \(f\) is high, \(\lambda=\frac{c}{f}\) is low (since \(c\) is constant), and \(E\) is high. When \(E\) is low, \(f\) is low (because \(E = hf\)), and \(\lambda=\frac{c}{f}\) is high.
• Part 6: Gamma rays have the highest frequency in the electromagnetic spectrum. Using \(E = hf\), they have the most energy. Radio waves have the lowest frequency, so using \(E = hf\), they have the least energy. Also, from \(c = f\lambda\), radio waves, with the lowest frequency, have the longest wavelength.

Answer:

• Part 4, Question 1: a. True
• Part 4, Question 2: a. True
• Part 5:
• First row (High frequency): Wavelength - Low, Energy - High
• Second row (Low energy): Wavelength - High, Frequency - Low
• Part 6:
• 1. Gamma rays
• 2. Radio waves
• 3. Radio waves