Optical Illusions and Light

What is the purpose of many optical illusions?

• To test vision disorders

• To exploit the disconnect between sensation and perception

• To enhance brain function

• To demonstrate color blindness

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NGSS.MS-LS1-8

What is an afterimage?

• A reflection seen in water

• A lingering image caused by overstimulated photoreceptors

• A mirage created by heatwaves

• A false image produced by sound waves

Tags

NGSS.MS-LS1-8

What percentage of sensory receptors in the human body are located in the eyes?

• 50%

• 60%

• 70%

• 80%

Tags

NGSS.MS-LS1-8

What type of energy does light consist of?

• Thermal energy

• Magnetic energy

• Electromagnetic radiation

• Chemical energy

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NGSS.HS-PS4-1

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What determines the hue of light?

• The speed of the light wave

• The frequency of the light wave

• The amplitude of the light wave

• The direction of the light wave

What does the amplitude of a light wave determine?

• The wavelength

• The hue

• The brightness

• The speed

Tags

NGSS.MS-PS4-1

What is the primary function of the cornea?

• To regulate eye color

• To focus light onto the retina

• To produce tears

• To filter harmful UV light

What role do the lacrimal glands play?

• They produce light-sensitive cells

• They keep the eyeball moist and protected

• They control the movement of the eye muscles

• They regulate pupil size

What is the diameter of the average adult eyeball?

• 2 cm

• 2.5 cm

• 3 cm

• 4 cm

What is the sclera?

• The transparent part of the eye

• The colored part of the eye

• The white, connective tissue of the eye

• The part responsible for focusing light