PHYS 1160 FINAL EXAM
Question 1
Correct
Mark 5.00 out of 5.00
Flag question
Question text
To study the distribution of interstellar atomic hydrogen (neutral hydrogen) gas in the galaxy
we would use
Select one:
A. an optical telescope and spectrograph to look for emission lines of hydrogen.
B. a radio telescope to look for radiation due to the 21 cm line of hydrogen.
C. an infrared telescope in order to penetrate the dust that obscures much of the Milky
Way.
D. A millimetre wave telescope to look for rotational lines due to hydrogen.
Feedback
B is the correct answer. Neutral atomic hydrogen is detected most easily by its 21cm radio
emission. Rotational lines in the millimetre region are only seen from molecules, and optical
emission lines are only seen where gas is heated by nearby hot stars.
The correct answer is: a radio telescope to look for radiation due to the 21 cm line of
hydrogen.
Question 2
Correct
Mark 5.00 out of 5.00

No comments found.

jordancarter 6 months ago

This study guide is clear, well-organized, and covers all the essential topics. The explanations are concise, making complex concepts easier to understand. It could benefit from more practice questions, but overall, it's a great resource for efficient studying. Highly recommend!

A. You will receive a PDF that is available for instant download upon purchase. The document will be accessible to you at any time, from anywhere, and will remain available indefinitely through your profile.

A. Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

A. you are buying this document from us learnexams

A. No, you only buy these notes for $ indicated . You are not obligated to anything after your purchase.

A. check our reviews at trustpilot

Add To Cart

Buy Now