5 Written questions
5 Matching questions
- The best shape for the cross-section of a simple astronomical mirror in order to produce the sharpest images of very distant objects at its prime focus is a(n)
- 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
- In 1670 Isaac Newton performed a critical experiment on the nature of light when he
- Refraction is the
- The nightly motion of objects across our sky from horizon to horizon is caused by the
- a demonstrated that white light was made up of colors that could be split by a prism and that these colors were not produced by the glass through which the light passed.
- b rotation of Earth on it axis.
- c move steadily toward the red end of the spectrum.
- d parabolic shape.
- e bending of light as it enters a dense but transparent material at an angle to the perpendicular to the surface of the material.
5 Multiple choice questions
- elliptical orbit, with the Sun at one focus.
- to compensate for image distortion caused by the Earth's atmosphere.
- Solar spectra show absorption in spectral lines that are characteristic of iron and are unique to it.
- the direction of an object's motion changes.
- visible light, UV radiation, X rays, gamma rays
5 True/False questions
The chemical makeup of a star's surface is usually inferred by → celestial equator and the star, measured along a great circle passing through both celestial poles.
In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to latitude? → declination
Are the constellations seasonal? → Yes, On a summer night many of the constellation you can see are different from the constellations you can see on a winter night. But there are some constellations you can see all year long.
If a modern astronomer describes a faint star as being in the constellation Cygnus, the Swan, you know that the star is → celestial equator and the star, measured along a great circle passing through both celestial poles.
Visible wavelengths of electromagnetic radiation have a range of wavelengths of → 400 nm to 700 nm