The Nature of Light: Visible Light

The video explains visible light, located in the center of the electromagnetic spectrum, and its colors: red, orange, yellow, green, blue, indigo, and violet. Red has the lowest frequency, while violet has the highest. Visible light is crucial for life on Earth, with nearly half of the sun's energy in this range. A prism can refract sunlight, separating it into rainbow colors. Despite its importance, visible light is only a small part of the entire spectrum.

Which color in the visible spectrum has the lowest frequency?

• Violet

• Red

• Blue

• Green

What is the role of a prism in relation to white light?

• It amplifies the light intensity.

• It absorbs all colors.

• It reflects light back.

• It refracts and separates light into colors.

Approximately what fraction of the sun's energy is in the visible range?

• Half

• One third

• One quarter

• Three quarters

What is the significance of visible light to life on Earth?

• It is the only source of heat.

• It is not significant.

• It is essential for photosynthesis and vision.

• It causes harmful radiation.

How does visible light compare to the entire electromagnetic spectrum?

• It is the only part we can see.

• It is the largest part.

• It is a small portion.

• It is the most dangerous part.