Hello, young learners! Welcome back to Basic 2 Basic Science and Technology. In our previous lesson, we learned about Using Our Five Senses. Today, we’re going to learn about The Sense of Sight.
Objectives
By the end of this lesson, you should be able to: * Identify which sense organ performs the action of seeing. * Describe the function of the eye. * Explain how light enters the eye.
The Sense of Sight – The Eye
The sense of sight is one of our five senses, and it allows us to see the world around us. The eye is the sense organ responsible for sight.
What is the Eye?
The eye is a complex organ that works like a camera. It gathers light and focuses it onto a special layer of cells called the retina. The retina converts the light into electrical signals that are sent to the brain. The brain then interprets these signals as images.
Parts of the Eye
The eye has many parts, each with a specific function. Some of the major parts of the eye include:
- Cornea: The clear, dome-shaped outer layer of the eye that helps focus light.
- Iris: The colored part of the eye that controls the amount of light entering the pupil.
- Pupil: The black opening in the center of the iris that allows light to enter the eye.
- Lens: A clear, flexible structure behind the pupil that helps focus light onto the retina.
- Retina: A layer of light-sensitive cells at the back of the eye that converts light into electrical signals.
- Optic Nerve: A bundle of nerve fibers that carries electrical signals from the retina to the brain.
How Light Enters the Eye
Light enters the eye through the cornea and pupil. The lens then focuses the light onto the retina. The retina converts the light into electrical signals that are sent to the brain through the optic nerve. The brain interprets these signals as images, allowing us to see.
Evaluation Questions
Now that you’ve learned about the sense of sight, let’s see if you can answer these questions:
- What is the sense organ that helps us see things?
- Name three parts of the eye and their functions.
- How does light enter the eye?
- Why is our sense of sight important?
- What would happen if we didn’t have our sense of sight?
Conclusion
We learned that the eye is the sense organ responsible for sight. It has many parts that work together to allow us to see. The eye gathers light and focuses it onto the retina, which converts the light into electrical signals that are sent to the brain. The brain then interprets these signals as images.
Don’t forget to check the comments section if you have any questions, and use the navigation to move to the next lesson. See you in the next lesson!
