Let’s go step by step to solve this worksheet.
---
Q.1: Label the diagram of the electromagnetic spectrum
We are given these keywords:
- X-rays
- Gamma rays
- Infrared
- Radio waves
- Ultraviolet
And we have a diagram with icons and wavelength markers (from 100m down to 0.0001nm), plus a “Visible Spectrum” bar in the middle.
The electromagnetic spectrum is ordered from
longest wavelength (lowest frequency) on the left to
shortest wavelength (highest frequency) on the right.
From left to right, the order should be:
1.
Radio waves — longest wavelength (AM/FM/TV/Radar icons) → matches 100m to ~1cm
2. Then comes
Infrared — just before visible light (TV remote icon) → around 0.01cm to 700nm (but here it's shown near 1000nm = 1μm)
3. Then
Visible Spectrum (already labeled)
4. After visible light comes
Ultraviolet (Sun icon) → around 10nm to 400nm
5. Then
X-rays (X-ray machine icon) → around 0.01nm to 10nm
6. Finally,
Gamma rays (radioactive elements icon) → shortest wavelength, below 0.01nm
So matching the blank boxes under the wave diagram (left to right):
First box (under AM/FM/TV/Radar):
Radio waves
Second box (under TV Remote):
Infrared
Third box (after Visible, under Sun):
Ultraviolet
Fourth box (under X-ray machine):
X-rays
Fifth box (under Radioactive Elements):
Gamma rays
✔ That fits perfectly with the icons and wavelengths.
---
Q.2: Fill in the blanks
a) __________ is the distance between corresponding points of two consecutive waves.
→ This is the definition of
wavelength.
b) __________ is the number of complete waves that pass a given point in one second.
→ This is
frequency.
c) __________ represents the distribution of different electromagnetic radiation according to wavelength, frequency, or energy.
→ This describes the
electromagnetic spectrum.
d) As the wavelength of electromagnetic waves increases, their frequency __________.
→ Wavelength and frequency are inversely related: when one goes up, the other goes down. So frequency
decreases.
---
Now let’s write the final answers clearly.
──────────────────────────────────────
Final Answer:
Q.1 Labels (left to right):
1. Radio waves
2. Infrared
3. Ultraviolet
4. X-rays
5. Gamma rays
Q.2 Fill-in-the-blanks:
a) Wavelength
b) Frequency
c) Electromagnetic spectrum
d) decreases
Parent Tip: Review the logic above to help your child master the concept of electromagnetic spectrum diagram worksheet.
