Electromagnetic Radiation Worksheet
Explore the properties and applications of electromagnetic radiation, including its spectrum, wave characteristics, and uses in daily life, suitable for Grade 9 science students.
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Electromagnetic Radiation: Grade 9 Science
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
The electromagnetic spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.
1. Which of the following types of electromagnetic radiation has the longest wavelength?
X-rays
Radio waves
Visible light
Ultraviolet light
2. What is the speed of all electromagnetic waves in a vacuum?
3 x 10^8 m/s
3 x 10^6 m/s
3 x 10^4 m/s
Varies depending on the wave type
3. The energy of an electromagnetic wave is directly proportional to its .
4. waves are used in remote controls and night vision devices.
5. The visible light spectrum ranges from red light, which has the longest wavelength, to light, which has the shortest wavelength.
6. Explain the relationship between wavelength and frequency for electromagnetic waves.
7. Give two examples of how different types of electromagnetic radiation are used in everyday technology.
8. Gamma rays have lower frequencies than radio waves.
True
False
9. All electromagnetic waves require a medium to travel through.
True
False
Use the words below to complete the sentences.
10. The distance between two consecutive crests or troughs of a wave is called the .
11. A quantum of electromagnetic radiation is known as a .
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