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Observing space Telescopes LO: Be able to state why we would want to observe objects in space. Be able to describe how we observe objects in space using the Hubble telescope. Be able to explain how the Hubble telescope works & be able to provide examples of objects that it has found. TASK: Why would we want to see objects in space? Write down your thoughts on a mini-
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Page 1: Observing space

Observing space Telescopes

LO:Be able to state why we would want to observe objects in space.Be able to describe how we observe objects in space using the Hubble telescope.Be able to explain how the Hubble telescope works & be able to provide examples of objects that it has found.

TASK:Why would we want to see objects in space?

Write down your thoughts on a mini-whiteboard!

Page 2: Observing space

So what did you think?

• How about this for a reason why we should observe space?

• http://www.youtube.com/watch?v=VNtsVP42bOE

• Other ideas?

Page 3: Observing space

Pirates telescope – 2 Lenses

How have telescopes developed over the years?

Page 4: Observing space

Richmond Park telescope

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Richmond Park telescope

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Home telescope containing mirrors

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Optical Telescope, Hawaii

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Jodrell Bank radio telescope, England

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An array of radio telescopes

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Arecibo Radio Telescope

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What factors control how effective earth-bound telescopes are?

What might these refer

to?

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Where is the best place for a large telescope on earth?

• Paired activity – using the fact file below, choose the best site to place a large optical telescope.

Place Latitude Population density Altitude

Mauna Kea, Hawaii, USA

19 degrees N 1650 per sq m 4205 m

Oruro, Bolivia 17 degrees S 150 per sq m 3710m

Greenwich, London, UK

52 degrees N 3750 per sq m 28 m

Kharga, Egypt 25 degree N 6 per sq m 59 m

Page 13: Observing space

Where should the telescope be placed?

In my opinion, the best site for the telescope is.............

This site is better than the others because ......................... and also .......................................................

It is not perfect through, as ..............................................

Another really good site is ........................................ because ...........................................................

The worst site would be .............................. because ...................................................................

....so how can we overcome these problems? Where

should we put the telescope? Is there somewhere else?

Page 15: Observing space

TelescopesOptical telescopes have bigger lenses than your _________. The bigger the lens the more _________ the

telescope takes in. Bigger lenses can see _________ . The best optical telescopes tend to reflect the light

using _________ instead of glass lenses. Large dishes like in _________ are used to detect _________ from

space. The _________ telescope is in orbit around the Earth. An advantage of a space telescope is that it

is above the Earth’s _________ and the view doesn’t get blocked by clouds, water __________ or dust. A

disadvantage of space telescopes is that it is difficult to _________ them.

missing words; repair, atmosphere, Hubble, Jodrell Bank, gamma rays, vapour

radio waves, light, eye, further, less far, mirrors, moon

TelescopesOptical telescopes have bigger lenses than your _________. The bigger the lens the more _________ the

telescope takes in. Bigger lenses can see _________ . The best optical telescopes tend to reflect the light

using _________ instead of glass lenses. Large dishes like in _________ are used to detect _________ from

space. The _________ telescope is in orbit around the Earth. An advantage of a space telescope is that it is

above the Earth’s _________ and the view doesn’t get blocked by clouds, water ________ or dust. A

disadvantage of space telescopes is that it is difficult to _________ them.

missing words; repair, atmosphere, Hubble, Jodrell Bank, gamma rays, vapour

radio waves, light, eye, further, less far, mirrors, moon

Page 16: Observing space

TelescopesOptical telescopes have bigger lenses than an eye does. The bigger the lens the more light the telescope takes in. Bigger lenses can see further. The best optical telescopes tend to reflect the light using mirrors instead of glass lenses. Large dishes like in Jodrell Bank are used to detect radio waves from space. The Hubble telescope is in orbit around the Earth. An advantage of a space telescope is that it is above the Earth’s atmosphere and the view doesn’t get blocked by clouds. A disadvantage of space telescopes is that it is difficult to repair them.