Electromagnetic Waves Quiz

What is the primary cause of electromagnetic wave production?

• Oscillating charges producing oscillating fields

• Static electric fields

• Parallel oscillations of electric and magnetic fields

• Magnetic fields in a vacuum

Which of the following is NOT part of the electromagnetic spectrum?

• X-rays

• Radio waves

• Ultraviolet light

• Sound waves

Why are electromagnetic waves considered transverse?

• They travel in a straight line

• They travel in successive series of crests and troughs

• They require a medium to travel

• Their oscillations are parallel to wave motion

What is the approximate speed of electromagnetic waves in a vacuum?

• 3 x 10^6 meters per second

• 3 x 10^8 meters per second

• 3 x 10^10 meters per second

• 3 x 10^12 meters per second

How does the speed of electromagnetic waves change in different media?

• It decreases due to diffraction

• It increases in denser media

• It remains constant

• It is faster in liquids than in gases

What happens to wavelength when the frequency of an electromagnetic wave increases?

• Wavelength becomes infinite

• Wavelength decreases

• Wavelength increases

• Wavelength remains the same

What is the relationship between radio waves and microwaves?

• They are not part of the electromagnetic spectrum

• They have the same wavelength

• They have the same frequency

• They differ in both frequency and wavelength

How do electromagnetic waves transfer energy in space?

• By heating the surrounding medium

• By creating sound waves

• By transferring energy from electric to magnetic fields and vice versa

• Through direct contact

What analogy is used to describe the energy transfer of electromagnetic waves in space?

• A swinging pendulum

• A flowing river

• A spinning top

• A rolling ball

What is the primary characteristic that differentiates electromagnetic waves from each other?

• Their ability to travel through solids

• Their color

• Their frequency and wavelength

• Their speed