Exam 23: Light, Telescopes, and the Sun

Compare and contrast the various types of telescopes, including radio telescopes. What are the advantages and disadvantages of each one? Are there other considerations when choosing one telescope over another besides optical clarity or magnification?

If you live at high latitude, when do you expect to see the aurora?

The first telescopes, and most amateur telescopes, rely on the human eye to observe objects. Modern telescopes record the observations with___________ .

To determine whether a celestial body is approaching or receding from Earth, astronomers employ ___________.

Irregularities in brightness on the Sun's photosphere granules. are produced by___________ .

The layer of the Sun that radiates most of the light that reaches Earth is called the___________ .

An___________spectrum is produced when white light is passed through a comparatively cool gas under low pressure.

Because lenses act like a prism to separate the colors of the spectrum, they produce a troublesome effect known as ___________.

Light is an electromagnetic wave, meaning an electric field and magnetic field travel together, oscillating at specific frequency. All metals are electrical conductors and all metals are also opaque to light. Why might this be, knowing the nature of light waves?

The energy from nuclear fusion is produced by the conversion of ___________.

In a radio telescope, the electromagnetic energy is gathered by ___________.

There are websites that predict solar weather, or essentially the impact of the solar wind on earth. How is this possible when the speed of light is a fixed quantity?

Nearly all large optical telescopes built today are___________ .