Transcript Convex and Concave Lenses

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Convex and Concave Lenses
Solving the Lens Mystery
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