Light Dispersion and Rainbows

The video tutorial explains the dispersion of white light through a glass prism, resulting in a spectrum of colors. It describes an activity to observe this phenomenon and explains why different colors bend at different angles. The tutorial also covers Isaac Newton's experiments with prisms, demonstrating that sunlight is composed of seven colors. Finally, it discusses the natural occurrence of rainbows, which are formed by the dispersion of sunlight through water droplets in the atmosphere.

What natural phenomenon is used to illustrate the dispersion of white light?

• A thunderstorm

• A rainbow

• A sunset

• A solar eclipse

What happens when a narrow beam of white light passes through a prism?

• It disappears

• It remains unchanged

• It splits into seven colors

• It becomes brighter

Which of the following is the correct sequence of colors in the spectrum of white light?

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

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

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

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

Why do different colors of light bend at different angles when passing through a prism?

• Because they have different temperatures

• Because they have different masses

• Because they have different wavelengths

• Because they have different speeds

What is the term used to describe the band of colored components of a light beam?

• Refraction

• Reflection

• Spectrum

• Prism

Which color of light bends the least when passing through a prism?

• Blue

• Green

• Red

• Violet

Who was the first to use a glass prism to obtain the spectrum of sunlight?

• Thomas Edison

• Isaac Newton

• Galileo Galilei

• Albert Einstein

What did Isaac Newton discover about sunlight using two prisms?

• Sunlight is composed of infinite colors

• Sunlight cannot be split into colors

• Sunlight is composed of seven colors

• Sunlight is composed of only one color

What is the role of water droplets in the formation of a rainbow?

• They block sunlight

• They act like small prisms

• They reflect sunlight

• They absorb sunlight

In which direction is a rainbow always formed relative to the Sun?

• Below the Sun

• Above the Sun

• Opposite to the Sun

• Towards the Sun