Light Energy II - JSS2 Basic science Past Questions and Answers - page 1
What is vision?
The ability to interpret the surrounding environment through the sense of sight.
The ability to interpret sounds.
The ability to smell
The ability to taste
Which part of the eye helps to focus light onto the retina?
Cornea
Retina
Optic nerve
Iris
What causes dispersion of light?
Separation of light into its constituent colors
Combination of light into a single color
Decrease in the intensity of light
Increase in the speed of light
What is the order of colors in a rainbow from outermost to innermost?
Red, orange, yellow, green, blue, indigo, violet
Violet, indigo, blue, green, yellow, orange, red
Blue, green, red, violet, orange, yellow, indigo
Yellow, green, blue, indigo, violet, orange, red
Which natural optical phenomenon occurs after a rain shower?
Dispersion
Reflection
Refraction
Rainbow
What part of the atmosphere causes the formation of a rainbow?
Water vapor
Nitrogen
Oxygen
Water droplets
What determines the variation in acuity and color perception in vision among different species?
Lens curvature
Retina size
Genetic factors
Iris color
Which component of the eye separates sunlight into its various colors, creating a rainbow?
Cornea
Retina
Optic nerve
Water droplets
What is vision, and why is it important?
Vision is the ability of an organism to interpret the surrounding environment through the sense of sight. It is important because it allows individuals to perceive shapes, colors, depth, and movement, which are crucial for various activities such as navigation, communication, and survival.
How does dispersion occur, and what natural phenomenon does it lead to?
Dispersion occurs when light is separated into its constituent colors as it passes through a medium, such as a prism or water droplets. This separation happens because different wavelengths of light bend by different amounts when they enter a medium, causing them to spread out. Dispersion leads to the formation of a rainbow, a natural optical phenomenon, when sunlight is dispersed and refracted by water droplets in the atmosphere, typically after a rain shower.