2. Several radio telescopes are combined into an interferometer in order to a.de
ID: 802917 • Letter: 2
Question
2. Several radio telescopes are combined into an interferometer in order to
a.decrease the smallest angle which can be observed by the telescope.
b.decrease the strength of the signal transmitted.
c. allow the instrument to operate in any weather conditions.
d. observe over a narrower range of wavelengths.
3. Which of the following are benefits of using telescopes located in space compared to telescopes on Earth? (You may choose more than one answer.)
1.Telescopes in space cost less to build and maintain than telescopes on Earth.
2.Space telescopes avoid atmospheric distortion by functioning above the Earth's atmosphere.
3.Telescopes in space can observe wavelengths of light that are absorbed by Earth's atmosphere.
4.Space-based telescopes are easier to repair when something goes wrong.
o www.saplinglearning.com, ibiscms/modibis/viewphpid=2875981 * Attempts Score O 10/6/2016 11:55 PM A 69.2/100 O 10/5/2016 05:18 PM A Gradebook o Assignment Information = Pine A Calculator - Periodic Table Available From 9/29/2016 06:00 PM Question 9 of 13 Due Date: 10/6/2016 11:55 PM a Sapling Learning Map , Points Possible: 100 What percentage of ultraviolet light at 100 nm will reach a detector on a telescope at sea level? Grade Category: Graded Description: O 50% Policies: ODU 10 O 90% O 100% You can check your answers. You can view solutions after the due date. You have three attempts per question. Opaque comes se You lose 10% of the points available to each answer in your question for each incorrect attempt at that answer Transparent For multiple-choice questions, the penalty depends on the number of choices available. 10nm MO) nm I am 10 am to am 1mm I cm 10 commit m IOI m Wavelen eTextbook Atmospheric Opacity This image shows the percentage of photons absorbed by Earth's atmosphere as a function of wavelength across the electromagnetic spectrum Help With This Topic Oweb Help & Videos O Previous O Check Answer O Need I Ext Technical Support and Bug Reports 16 Sapling learning, Inc. 139 about us careers partners privacy policy terms of use contact us help 2 ) a | XD N 0. P3 w r s IR SY 12:19 PM 10/6/2016Explanation / Answer
1) Percentage of uv light at 100 nm will reach a detector on a telescope at sea level is ' 0 ' . Because Earth’s stratospheric ozone layer blocks all wavelengths below 300 nm from reaching ground based telescopes.
2) a. decrease the smallest angle which can be observed by the telescope.
3) Both 2 and 3 are correct in this context. Space telescopes avoid atmospheric distortion by functioning above the Earth's atmosphere and telescopes in space can observe wavelengths of light that are absorbed by Earth's atmosphere.
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