The Human Eye: Structure and Function
Explore the intricate structure and fascinating functions of the human eye with this comprehensive Grade 9 science worksheet.
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The Human Eye: Structure and Function
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Read each question carefully and answer to the best of your ability. Refer to the provided diagram where necessary.
The Human Eye
1. Which part of the eye is responsible for controlling the amount of light that enters the eye?
Cornea
Retina
Iris
Lens
2. Which part of the eye contains photoreceptor cells (rods and cones) that detect light?
Pupil
Retina
Sclera
Optic Nerve
3. The clear, outer layer at the front of the eye that helps to focus light is called the .
4. The changes shape to adjust the focus of light onto the retina.
5. The blind spot is an area on the retina where the exits the eye, and there are no photoreceptor cells.
6. Describe the function of the pupil in the human eye.
7. Explain the difference between rods and cones in the retina.
8. The vitreous humor is a watery fluid that fills the space between the lens and the retina.
True
False
9. Myopia is a condition where distant objects appear blurry.
True
False