Galaxies and Telescopes

This object is able to make distant objects appear closer.

• telephone

• teleport

• telescope

• telegraph

Telescopes that use mirrors to collect incoming light are called __________.

• nonoptical telescopes

• reflectors

• radio telescopes

• refractors

A refracting telescope uses a(n) ________ to gather light and a(n) ________ to magnify the image.

• objective lens; eyepiece

• primary mirror; focuser

• secondary mirror; refractor

• reflector; enlarger

A device that detects radio waves from objects in space is called a(n)

• radio telescope.
• reflecting telescope.
• refracting telescope.
• electromagnetic telescope.

What color has the longest wavelength?

• Red
• Orange
• Green
• Blue

What color has the shortest wavelength?

• Blue
• Red
• Green
• Yellow

A refracting telescope uses _______ to focus light.

• Lenses

• Mirrors

• Lasers

• Water

The type of light humans can see is called ___________ light.

• electromagnetic
• red
• white
• visible

What type of telescope is this?

• Refractor
• Reflector
• Non-Optical
• X- Ray

What type of telescope is this?

• Refractor
• Reflector
• Non-Optical
• X- Ray