5 Written questions
5 Matching questions
- The declination of a star in the sky is defined as the angle between the
- The charged-coupled device, now used extensively for astronomical imaging, works on what principle?
- When a solid body (or a dense gas such as a star) cools from a temperature of several thousand degrees, the color of the wavelength of maximum emission of radiation will
- the energy flux, F, from a star is the amount of
- The main reason for building large optical telescopes on the Earth's surface is to
- a move steadily toward the red end of the spectrum.
- b collect more light from faint objects.
- c Light generates electrical charge on a computer-readable multielement array of detectors.
- d celestial equator and the star, measured along a great circle passing through both celestial poles.
- e energy emitted by each square meter of the star's surface each second.
5 Multiple choice questions
- at aphelion.
- bending of light as it enters a dense but transparent material at an angle to the perpendicular to the surface of the material.
- Newton's laws showed that planets can move around the Sun by themselves forever, without coming to rest.
- Right ascension
5 True/False questions
The zero point of the celestial coordinate known as right ascension is defined to be the → point where the Sun crosses the celestial equator moving northward in its path across the sky.
The chemical makeup of a star's surface is usually inferred by → spectroscopy of the light emitted by the star.
The position of an element in the periodic table is directly related to the → number of protons in the atomic nucleus and hence its positive charge.
Visible wavelengths of electromagnetic radiation have a range of wavelengths of → visible light, UV radiation, X rays, gamma rays
What is the main reason for using several radio telescopes together as an interferometer? → temporary reversal of the planet's normal west-to-east motion past the background stars as seen from the Earth.