Science+questions+page+23

Angela Corrao Science page 23 questions 1-3 1. __Refracting telescopes__ are telescopes that use a set of lenses to gather and focus light. __Reflecting telescopes__ are telescopes that use curved mirrors to gather and focus light. A way in which both these telescopes are similar are that they are both telescopes and they help scientists and people see things larger and more clear. A way in which these two telescopes are different are because __refracting telescopes__ use lenses to gather and focus light, and __reflecting telescopes__ use mirrors to gather and focus light. 2. Earths atmosphere causes starlight to shimmer and blur. Light population from large cities can make the sky look bright, which limits the observers ability to view faint objects. The way in which astronomers use to solve the problems are that they place telescopes in dry areas to avoid water vapor in the air. Mountaintops are good places to use a telescope because the air is thinner at higher elevations. 3. __Electromagnetic wavelengths__ Blocked by earths atmosphere are electromagnetic waves. Scientists have put up special telescopes to detect the blocked waves. The telescopes include ultraviolet telescopes, gamma-ray telescopes, and x-ray telescopes.

__Other wavelengths__ One million times longer than optical wavelengths are wavelengths. Little radio radiation reaches earth from objects in space. The radio telescopes are very sensitive, since they can detect the small faint waves