Grade 8 Science: The Human Eye
Explore the anatomy and function of the human eye, including its parts, how vision works, and common eye conditions.
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Grade 8 Science: The Human Eye
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Read each question carefully and answer to the best of your ability. Use the provided image for reference where indicated.
Refer to the diagram below to answer the following questions.
1. The is the transparent outer layer at the front of the eye that protects it and helps in focusing light.
2. The colored part of the eye, called the , controls the size of the pupil.
3. The is a light-sensitive layer at the back of the eye that converts light into electrical signals.
4. The nerve transmits visual information from the retina to the brain.
1. Which part of the eye is responsible for changing the shape of the lens to focus on objects at different distances?
Iris
Pupil
Ciliary muscles
Cornea
2. What is the function of the rods in the retina?
Detecting color vision
Detecting dim light and peripheral vision
Controlling pupil size
Producing tears
1. The pupil is a muscle that contracts and relaxes to control the amount of light entering the eye.
True
False
2. Nearsightedness (myopia) occurs when light focuses in front of the retina.
True
False
1. Briefly explain how the eye focuses light to create a clear image on the retina.
2. Describe two ways you can protect your eyes from damage.