Light: Summing Up

The video explores the fascinating characteristics of light, explaining its nature as electromagnetic energy that behaves as both waves and particles called photons. It covers the speed of light, the electromagnetic spectrum, and the uses of different electromagnetic waves like radio waves and X-rays. The visible spectrum is discussed, including how prisms refract light into colors. The video also examines how mirrors reflect light and lenses refract it. The conclusion encourages viewers to think differently about light.

What is the speed of light in kilometers per second?

• 600,000 km/s

• 450,000 km/s

• 300,000 km/s

• 150,000 km/s

Which of the following is NOT a type of electromagnetic wave?

• Radio waves

• Microwaves

• X-rays

• Sound waves

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

• Gamma rays

• Infrared

• Ultraviolet

• Visible spectrum

How do rain droplets affect white light?

• They refract and separate it into colors

• They scatter it randomly

• They reflect it back

• They absorb it completely

What is the primary function of a lens in manipulating light?

• To refract light

• To reflect light

• To absorb light

• To emit light