Properties and Behavior of Light

The video explores the nature of light, explaining it as a form of energy traveling in waves. It introduces the electromagnetic spectrum, highlighting visible light and its role in color perception. The video discusses how different wavelengths correspond to different energy levels, with visible light being a small part of the spectrum. It explains how prisms and rainbows reveal the colors within white light, and how color perception is based on light reflection and absorption. Infrared and ultraviolet light are also covered, emphasizing their invisibility to the human eye.

What is light primarily considered as?

• A solid object

• A form of energy

• A chemical reaction

• A type of matter

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

• Gamma rays

• X-rays

• Sound waves

• Radio waves

What is the relationship between wavelength and energy in electromagnetic radiation?

• Wavelength and energy are unrelated

• Longer wavelength means less energy

• Shorter wavelength means less energy

• Longer wavelength means more energy

What happens to white light when it passes through a prism?

• It speeds up

• It remains unchanged

• It disappears

• It bends and spreads into colors

What is the main source of light on Earth?

• The Sun

• The Moon

• Artificial lights

• Stars

Which color in the visible spectrum has the longest wavelength?

• Violet

• Green

• Red

• Blue

What is the order of colors in a rainbow from the outside to the inside?

• Violet, Indigo, Blue, Green, Yellow, Orange, Red

• Blue, Green, Yellow, Orange, Red, Indigo, Violet

• Red, Orange, Yellow, Green, Blue, Indigo, Violet

• Green, Yellow, Orange, Red, Blue, Indigo, Violet

What type of light is invisible and has a longer wavelength than red?

• X-ray

• Ultraviolet

• Gamma ray

• Infrared

Why does a green leaf appear green to us?

• It absorbs green light

• It changes the color of light

• It reflects green light

• It emits green light

What do objects that appear white do with visible light?

• Emit all visible light

• Absorb all visible light

• Reflect all visible light

• Change the color of visible light