Problem Analysis:
The task involves labeling the electromagnetic spectrum diagram and answering questions related to wave properties. Let's break it down step by step.
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Q.1: Label the Diagram of the Electromagnetic Spectrum
The electromagnetic spectrum is ordered by wavelength, from longest to shortest. The given keywords are:
- X-rays
- Infrared
- Ultraviolet
- Gamma rays
- Radio waves
We need to place these labels in the correct positions on the diagram based on their wavelengths.
1.
Radio Waves: These have the longest wavelengths (leftmost part of the spectrum).
2.
Microwaves: Slightly shorter than radio waves.
3.
Infrared: Shorter than microwaves but longer than visible light.
4.
Visible Light: Includes colors like red, orange, yellow, green, blue, indigo, and violet.
5.
Ultraviolet: Shorter than visible light.
6.
X-rays: Even shorter than ultraviolet.
7.
Gamma Rays: The shortest wavelengths (rightmost part of the spectrum).
Using this order, we can label the diagram as follows:
-
Radio Waves: Leftmost section (AM/FM TV, Radar).
-
Microwaves: Next section (TV Remote).
-
Infrared: Next section (Light Bulb).
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Visible Light: Middle section (Sun).
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Ultraviolet: Next section (after Sun).
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X-rays: Next section (X-ray machine).
-
Gamma Rays: Rightmost section (Radiative Elements).
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Q.2: Fill in the Blanks with Suitable Words
Now, let's answer the questions about wave properties:
a) _______ is the distance between corresponding points of two consecutive waves.
- The distance between corresponding points of two consecutive waves is called the
wavelength.
Answer: Wavelength
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b) _______ is the number of complete waves that pass a given point in one second.
- The number of complete waves passing a given point in one second is called the
frequency.
Answer: Frequency
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c) _______ represents the distribution of different electromagnetic radiation according to wavelength, frequency, or energy.
- The term that describes the distribution of electromagnetic radiation based on wavelength, frequency, or energy is the
electromagnetic spectrum.
Answer: Electromagnetic Spectrum
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d) As the wavelength of electromagnetic waves increases, their frequency _______.
- The relationship between wavelength (\(\lambda\)) and frequency (\(f\)) is given by the equation:
\[
c = \lambda \cdot f
\]
where \(c\) is the speed of light (a constant). From this equation, we see that wavelength and frequency are inversely proportional. Therefore, as the wavelength increases, the frequency decreases.
Answer: Decreases
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Final Answers:
1.
Labeling the Diagram:
- Radio Waves: AM/FM TV, Radar
- Microwaves: TV Remote
- Infrared: Light Bulb
- Visible Light: Sun
- Ultraviolet: After Sun
- X-rays: X-ray machine
- Gamma Rays: Radiative Elements
2.
Fill in the Blanks:
- a)
Wavelength
- b)
Frequency
- c)
Electromagnetic Spectrum
- d)
Decreases
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Final Answer Box:
\[
\boxed{\text{Wavelength, Frequency, Electromagnetic Spectrum, Decreases}}
\]
Parent Tip: Review the logic above to help your child master the concept of electromagnetic radiation worksheet.
