Lenses Worksheet
Lenses Worksheet
Lenses Worksheet
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SCIENCE 8 – LENSES WORKSHEET<br />
NAME:<br />
1) Match each Term on the left with the best Descriptor on the right. Each Descriptor may be used<br />
only once<br />
Term<br />
Descriptor<br />
Lens A. Point where the converging light rays meet<br />
Focal length B. Lens that is thinner in the middle than at the edge<br />
Convex lens C. A piece of transparent material that bends light<br />
Concave lens D. Lens that is thicker in the middle than at the edge<br />
Focal point E. Distance from the centre of the lens to the focal point<br />
2) Compare and contrast concave lenses and convex lenses.<br />
Draw the lens.<br />
Do light rays<br />
converge or diverge?<br />
Is the image upright<br />
or upside down?<br />
Is the image smaller<br />
or larger than the<br />
object?
3) Will the image be<br />
(a) larger, smaller or the same size as the object?<br />
(b) upright or upside down?<br />
4) Will the image be<br />
(a) larger, smaller or the same size as the object?<br />
(b) upright or upside down?<br />
5) Will the image be<br />
(a) larger, smaller or the same size as the object?<br />
(b) upright or upside down?<br />
6) Will the image be<br />
(a) larger, smaller or the same size as the object?<br />
(b) upright or upside down?<br />
7) Sometimes people use the phrase double convex or double concave to describe a lens. They are<br />
referring to the shape of each surface. To identify concave and convex lenses, it is the thickness of<br />
the glass in the middle compared to the thickness at the edges that counts. Classify the following<br />
lenses as convex or concave.
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