1. Telescopes
Chapter 7 Lesson 1

2. What are the Regions of the Electromagnetic Spectrum
Electromagnetic radiation-energy that can travel through space in the form of waves
Visible light- the light you can see
Spectrum- white light that has been shined through a prism and creates a range of different colors according to their wavelengths

3. What are Telescopes and How Do They Work?
Telescopes- instruments that collect and focus light and other forms of electromagnetic radiation
They make distant objects appear larger and brighter
Optical telescope- uses lenses or mirrors to collect and focus visible light
2 types of optical telescopes
Refracting telescope- uses convex lenses to gather and focus light
Reflecting telescope- uses a curved mirror to focus light

4. Telescopes Refracting and Reflecting Telescopes
A refracting telescope uses convex lenses to focus light. A reflecting telescope uses a curved mirror to focus light.

5. Telescopes Refracting and Reflecting Telescopes
What are the similarities and differences between the two?

6. Other Telescopes
Observatory- building that contains one or more telescopes usually located at tops of mountain tops
Radio telescope- direct radio waves from objects in space
Use curved reflecting surfaces
X-Ray Telescopes- usually located in space collect x-rays from very hot opjects in space

7. Telescopes
Where do
the Optical, Radio and
X-ray telescopes work best?