Exploring Lenses
A Grade 7 science worksheet to explore the properties of different types of lenses and how they form images.
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Exploring Lenses
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Date:
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Read each question carefully and answer to the best of your ability. Diagrams may be helpful for some questions.
1. Which type of lens is thicker in the middle and thinner at the edges, causing parallel light rays to converge at a focal point?
Concave lens
Convex lens
Plane lens
Cylindrical lens
2. What happens to parallel light rays when they pass through a concave lens?
They converge
They diverge
They reflect
They pass straight through
3. The point where parallel light rays converge after passing through a convex lens is called the .
4. A lens that is thinner in the middle and thicker at the edges is known as a lens.
5. Concave lenses are used to correct farsightedness.
True
False
6. A real image can be projected onto a screen.
True
False
7. Describe one real-world application of a convex lens.
8. Describe one real-world application of a concave lens.
9. The diagram below shows light rays passing through a lens. Identify the type of lens shown and describe what is happening to the light rays.
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