CSEE (Form 4) Electromagnetic Radiation — practice questions

Explore 3 free Electromagnetic Radiation questions in CSEE (Form 4) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Electromagnetic Radiation questions and exercises with answers

Showing questions 1–3 of 3.

Which ability does electromagnetic radiation have that sound does not?Read the answer and worked solution →Which kind of electromagnetic radiation has the lowest frequency?Read the answer and worked solution →Order the spectrum by frequencyRead the answer and worked solution →

Worked practice questions

Which ability does electromagnetic radiation have that sound does not?

It carries energy from place to place
It reflects from a hard surface
It travels without a medium
It can be given a wavelength

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Correct answer: C. It travels without a medium

1. Sound is carried by the particles of a medium, so it dies out where there are no particles. 2. Electromagnetic radiation can propagate without a medium through which to move, even though it is a wave. 3. That is why sunlight crosses empty space to reach us while sound cannot. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 11: Electromagnetic radiation_

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Which kind of electromagnetic radiation has the lowest frequency?

Radio waves
Gamma rays
Ultraviolet
Visible light

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Correct answer: A. Radio waves

1. The spectrum is classified into types according to the frequency of the wave. 2. In order of increasing frequency the types run radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays. 3. Radio waves stand at the start of that list, so they carry the lowest frequency. 4. Gamma rays stand at the far end of the list, so they carry the highest frequency and the most energy. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 11: Electromagnetic radiation_

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Order the spectrum by frequency

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Steps

Radio waves
Microwaves
Infrared
Visible light
Ultraviolet
X-rays
Gamma rays

Instructions

Tap the types of radiation from the lowest frequency to the highest.

_Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 11: Electromagnetic radiation_

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