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WorksheetsMISIUNEA CURCUBEU
Total questions: 11
Worksheet time: 6mins
Recall: What is the name of the phenomenon in which white light separates into the colors of the rainbow when it passes through a drop of water or a prism?
Refraction (bending of light)
Reflection (bouncing of light)
Dispersion (splitting of light)
Absorption (stopping of light)
Recall: What is the name of the phenomenon in which white light separates into the colors of the rainbow when it passes through a drop of water or a prism?
Refraction (bending of light)
Reflection (bouncing of light)
Dispersion (splitting of light)
Absorption (stopping of light)
Skill/Concept: When white light passes through tiny water droplets like a misty cloud, it can separate into different colors. Which property of light makes this separation visible as a spectrum?
Different colors refract by different amounts
All colors reflect equally from droplets
Water droplets emit their own light colors
White light absorbs only red and violet
Recall: Choose the correct order of colors in a rainbow starting with the color that bends the least and ending with the color that bends the most.
Blue, Green, Red, Yellow, Violet
Green, Yellow, Red, Violet, Blue
Red, Orange, Yellow, Green, Blue, Indigo, Violet
Violet, Indigo, Blue, Green, Yellow, Orange, Red
Skill/Concept: You look at a rainbow and want to reassemble white light. Which end of the spectrum bends the least, helping you identify the starting color?
Red end bends the least
Green end bends the least
Blue end bends the least
Violet end bends the least
Strategic Thinking: A beam of white light enters a glass prism from air and exits showing separated colors on a screen. To increase the spread between red and violet, what change would most effectively increase the separation you observe?
Use a material that bends light more strongly than glass
Shine a weaker (dimmer) light beam
Shorten the prism so light travels a shorter distance inside
Increase the screen’s distance so colors have less space to spread
Recall: What is the name of the phenomenon where light changes its direction when it moves from one transparent medium to another, such as from air into water?
Reflection
Dispersion
Refraction
Diffraction
Strategic Thinking: A coin at the bottom of a clear cup seems to shift position when water is poured in. Which explanation best uses evidence from light behavior to justify this effect?
Light from the coin is absorbed by water, so the eye estimates a new position
Light from the coin reflects straight back with no change in direction
Light from the coin refracts at the water–air boundary, changing paths to the eye
Water droplets emit their own light, making the coin appear brighter and closer
Which practical application uses thin glass cables to send data at high speeds by keeping light bouncing inside the cable?
Radio tower communication that uses electromagnetic radio waves through air
Fiber optic cables that rely on total internal reflection inside glass
Sound waves traveling through metal wires in telephones
Satellite dishes that reflect microwaves in the atmosphere
In fiber optics, what light behavior makes the signal stay inside the glass cable instead of escaping?
Absorption of all light by the glass material
Total internal reflection at the glass boundary
Conversion of light into electrical current
Scattering of light into many directions
A city wants a fast and secure method to send an emergency message across town using light. Based on the description, which option best meets this need and why?
Use a radio tower, because radio waves are light and do not need cables
Use fiber optics, because light signals are guided through glass fibers for high-speed transmission
Use metal wire cables, because electricity moves slower and is easier to control
Use satellite communication, because signals must leave Earth to be fast
