Convex and Concave Lenses

Solving the Lens Mystery

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Lynn Garner & Sharon Holloway

Lenses and Light

• Lenses are curved pieces of glass that can be convex or concave.

• Concave lenses cause light rays to spread out (diverge).

• Convex lenses cause light to come together (converge) to a focal point.

Refracted Light –Convex & Concave

Concave Mirrors

• Make-up mirrors are concave and magnify

• Concave mirrors are used in reflectors, spotlights, and headlights focus light into beams

Convex Mirrors

• Convex mirrors curve outwards and are wide angle mirrors.

• Convex mirrors are like rear view mirrors

• They provide drivers and clerks with a wide field of vision.

Review

• Excel Survey Graph – Far/Near Sighted

• Test Questions

• Overall Graph

Resources

• Kasparie, Diane & Mary Young. Practical Applications of Optical Lenses: Telescopes & Projectors. 2002.

• Discovery Education. Reflected Light and Mirrors.• Sharon Holloway – Fifth Grade Teacher• Lynn Garner - TST