Post on 17-Jan-2015
description
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!
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?
Pirates telescope – 2 Lenses
How have telescopes developed over the years?
Richmond Park telescope
Richmond Park telescope
Home telescope containing mirrors
Optical Telescope, Hawaii
Jodrell Bank radio telescope, England
An array of radio telescopes
Arecibo Radio Telescope
What factors control how effective earth-bound telescopes are?
What might these refer
to?
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
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?
The Hubble Space Telescope Good websites:
1. http://hubblesite.org/
2.http://www.nasa.gov/mission_pages/hubble/main/index.html
3. http://hubblesite.org/gallery/
Homework - Draw a labelled diagram to describe and explain how the Hubble
telescope works & include an image that was taken by the
telescope.
http://www.youtube.com/watch?v=SpkrVw_E6Nw
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
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.