2.19.13 - Quiz

Good Morning Prof. Cantoral,

I just wanted to remind you that I will not be attending class today due to my work schedule. I will be there on Thursday. Please see below, as they are the answers to today's quiz.

Thank you and have a wonderful day!

Christina Carrasco

  

QUIZ

1.    What are the types of spectra?

·         The types of spectra are: Absorption, Continuous, and Emission.

2.    Which is hotter a blue or a red star?

·         The Blue Star is hotter.

3.    Do humans emit electromagnetic radiation?

·         YES!

4.    Which planet looks red from Earth?

·         MARS.

5.    Describe a refraction telescope.

·         A refraction telescope is a telescope with focusing lens; a lens receives and focuses light that is then viewed through a second magnifying lens in the eyepiece.

6.    Describe a reflection telescope.

·         A reflection telescope is a telescope that uses a mirror to collect light; a telescope in which light from the object is initially focused by a concave mirror.

7.    Why telescopes are sent to space?

·         Telescopes are sent to space because they gather information from the light that does not reach the Earth's surface.

8.    Can we detect radio waves from space?

·         YES!

9.    Describe the Arecibo telescope in Puerto Rico.

·         The Arecibo Telescope, located in Puerto Rico, is the site of the world's largest single-dish radio telescope; the Observatory is recognized as one of the most important national centers for research in radio astronomy, planetary radar and terrestrial aeronomy.

10.  What is the Doppler Effect?

·         The Doppler Effect is a change in frequency because of motion: a perceived change in the frequency of wave energy, as in sound or radio, travels the distance between the source and the observer changes. (two objects) The wavelength can seem to be changed if one or both of them are moving.