Space Exploration

A ______ telescope uses a mirror to focus light onto a small area.

• reflecting
• refracting
• radio
• spectrum

What is the lens called that is curved and the middle is thicker than the edges?

• Refracting 
• Reflecting 
• Convex
• Curved 

What does Reflecting Telescope have?

• Lens
• Mirrors
• Bat ears

What does Refracting Telescope have?

• Sand
• Mirrors
• Lens
• Batmobile 

Radio telescopes biggest advantage is that they:

• Can be used during the day
• Can be used in any type of weather
• Almost all radio waves make it to the surface
• All of these

Both reflecting and refracting telescopes are designed to

• break visible light into colors of the spectrum.
• separate visible light from ultraviolet and radio waves.
• gather and focus visible light.
• work better with short-wavelength radiation.

Why are many large optical telescopes located on mountains?

• to be closer to the stars
• to be above part of the atmosphere
• because it is easier to build telescopes on mountains
• to be closer to city lights

Radio waves have ______ wavelengths than waves of visible light.

• shorter
• longer
• the same length

Why is the Hubble telescope located in space?

• So it can be closer to the stars it magnifies
• They have very large optical lenses
• So its images are not distorted by Earth's atmosphere 
• So it can be operated by astronauts 

Telescopes in orbit above Earth's atmosphere.

• space telescope
• refracting telescope
• reflecting telescope
• radio telescope