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4.1 Vocab - Telescopes
telescopes, electromagnetic spectrum
11
Science
8th Grade
11/08/2011

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Term
telescope-
Definition
a device that makes diffrent objects appear closer.
Term
electromagnetic radiation-
Definition
energy that can travel throuh th space in the form of wavee.
Term
visible light-
Definition
light you can see.
Term
wavelength-
Definition
the crest of one wave and the crest of the next.
Term
spectrum-
Definition
the light spreds to make a range of different colors with different wave lengths.
Term
optical telescope-
Definition
mirrors will collect and foucs visible light.
Term
refracting telescope-
Definition
convex lenses to gather and focus light.
Term
convex lens-
Definition
a piece of transparent glass curved so that the middle is thicker than the edges.
Term
refelecting telescope-
Definition
a curved mirror to collect and focus light.
Term
radio telescope-
Definition
detect radio waves from obbjects in space.
Term
observatory-
Definition
building that contains one of more telescopes
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