Telescopes

Match

Match the following

• Reflecting Telescope

• Refracting Telescope

• detector

Uses mirrors to focus the light

Uses a lens to focus the light

Where the light is delivered for further study

• Uses mirrors to focus the light

• Uses a lens to focus the light

• Where the light is delivered for further study

Multiple Choice

The bending of a beam of light is called

• absorption.

• refraction.

• reflection.

• optics.

Multiple Choice

Refracting telescopes use a __ to gather and concentrate a beam of light.

• lens

• mirror

Multiple Choice

A reflecting telescope uses a ___ to focus the incoming light.

• curved lens

• curved mirror

• flat lens

• flat mirror

Multiple Choice

All large astronomical telescopes are ___.

• reflectors

• refractors

• neither answer is correct

Open Ended

List one of the three facts regarding astronomical telescopes.

Open Ended

Which suffers the least from the effects of diffraction? Large telescopes or small ones?

Open Ended

List one reason why charge-coupled devices (CCD's) are used instead of photographic plates.

Open Ended

What is "seeing"?

Multiple Choice

Do radio and space-based telescopes suffer from "seeing"?

• Yes

• No

Open Ended

Why are radio telescopes generally larger than optical ones?

Multiple Choice

Using _____, radio telescopes can produce images that are much sharper than the best optical telescope.

• opticalometery

• interferometry

• couplerometry

Multiple Choice

Which of the following observations must be done from space?

• infrared

• ultraviolet

• visible spectrum

• x-ray