Glencoe - Chapter 19 Lesson 1

What is the purpose of telescopes?

• to gather and focus light to see things from a distance

• to hear things better

• to learn how to use the google classroom features

How does radiant energy travel through space?

• through gamma rays

• through x-rays

• through electromagnetic waves

• through infrared waves

About how long are the wavelengths of microwaves?

• 1mm

• 10mm

• 100mm

• 100km

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How is looking at stars like looking into the past?

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What are the two types of optical telescopes? (Choose two)

• radio

• refracting

• reflecting

• vizio

What kind of electromagnetic waves do refracting telescopes collect?

• gamma rays

• ultraviolet waves

• visible light

• microwaves

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Large numbers of radio telescopes are put together - why?

• because they look like TV satellites

• because they use mirrors

• because they are small

• so they act like one large telescope

About how far out do gamma rays reach?

• about 25km above Earth

• about 25mm above Earth

• about 50km above Earth

• about 50mm above Earth

Why do astronomers put some telescopes in space?

• because space is awesome

• because space is cold

• because the atmosphere blocks some types of radiation

• because the atmosphere is there

What is the name of the first optical space telescope?

• Webb

• Hubble

• Spitzer