Electromagnetic Spectrum Song

The video explains how radiation from the sun reaches Earth in waves of varying sizes, most of which are invisible to the human eye. It covers the electromagnetic spectrum, detailing different types of waves such as radio, microwave, infrared, visible light, ultraviolet, X-rays, and gamma rays. The video highlights the properties of these waves, including wavelength and frequency, and discusses the potential dangers of certain types of radiation like UV rays, X-rays, and gamma rays, emphasizing the protective role of Earth's atmosphere.

What is the primary characteristic that differentiates radio waves from microwaves?

• Microwaves are used for satellite communication.

• Radio waves have a higher frequency than microwaves.

• Radio waves have a longer wavelength than microwaves.

• Microwaves have a lower energy than radio waves.

Which part of the electromagnetic spectrum is visible to the human eye?

• Gamma rays

• Visible light

• Ultraviolet

• Infrared

What is the range of wavelengths for visible light?

• 430 to 790 THz

• 390 to 700 nm

• 700 to 1000 nm

• 100 to 390 nm

Which type of radiation is known for causing sunburns?

• X-rays

• Infrared rays

• Gamma rays

• Ultraviolet rays

How does Earth's atmosphere protect us from gamma rays?

• By scattering them

• By converting them into harmless light

• By absorbing them

• By reflecting them back into space