P1.13 Exploring The Universe Flashcards Preview

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Flashcards in P1.13 Exploring The Universe Deck (17)
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0
Q

When photography was invented that amount of data that could be gathered with these telescopes…

A

Increased

1
Q

What did early telescopes let people see?

A

Objects that emitted visible light.

2
Q

How are objects recorded that are too faint to be seen by looking through a telescope?

A

They can be recorded as a photograph. By pointing the telescope at the same spot in the sky for several hours.

3
Q

How do modern telescopes work?

A

They use digital cameras to record images and computers are used to analyse the images and look for new objects

4
Q

Why can spectrometers be attached to telescopes?

A

To analyse different wavelengths of light given off by stars and galaxies

5
Q

Most objects that astronomers observe give out…

A

Energy in all parts of the electromagnetic spectrum

6
Q

What can modern telescopes be designed to detect?

A

Almost any part of the electromagnetic spectrum, showing us that things can’t be detected using visible light

7
Q

When was the Hubble space telescope put in the orbit around the earth?

A

1990

8
Q

What can the Hubble Space Telescope produce?

A

Very clear and sharp images of stars and galaxies because it is above the atmosphere

9
Q

Why is it a good thing that the Hubble Space Telescope is above the atmosphere?

A

Because light waves from space are not reflected or refracted by clouds and dust or even by movements of air in the atmosphere.

10
Q

Why are other telescopes put in the orbit?

A

Because the atmosphere absorbs gone wavelength of the radiation they are designed to detect. If these telescopes where on earth they wouldn’t detect anything

11
Q

What is visible light?

A

Electromagnetic waves that can be detected by the human eye

12
Q

Electromagnetic spectrum is the…

A

The entire frequency range of electromagnetic waves

13
Q

X-Rays…?

A

Electromagnetic radiation that has a shorter wavelength than UV but longer than gamma rays

14
Q

What is ultraviolet?

A

Electromagnetic radiation that has a shorter wave length than visible light but longer than x-Rays

15
Q

How does using a camera to record the image seen through a telescope allow astronomers to gather more data?

A

We can save and analysis pictures and we can go back to it

16
Q

Two differences between radio telescopes and telescopes that detect visible light are…

A

Radio wave telescopes are much larger and don’t have mirrors