5 Written questions
5 Matching questions
- If a modern astronomer describes a faint star as being in the constellation Cygnus, the Swan, you know that the star is
- In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to latitude?
- Are the constellations seasonal?
- The main reason for building large optical telescopes on the Earth's surface is to
- One light-year is the
- a collect more light from faint objects.
- b distance that light travels in one year.
- c 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.
- d declination
- e somewhere within a particular region of sky having definite boundaries.
5 Multiple choice questions
- to obtain much better angular resolution or sharpness in the images.
- path traced out by the Sun in our sky over one year against the background stars.
- celestial equator and the star, measured along a great circle passing through both celestial poles.
- violet light has a shorter wavelength than red light.
5 True/False questions
Kepler's first law states that a planet moves around the Sun in a(n) → opposition.
In the 1860s, James Clerk Maxwell carried out important investigations on the nature of light when he → elliptical orbit, with the Sun at one focus.
The charged-coupled device, now used extensively for astronomical imaging, works on what principle? → Light generates electrical charge on a computer-readable multielement array of detectors.
According to modern atomic theory, light emitted by atoms originates from → the direction of an object's motion changes.
Why is the sky blue? → distance that light travels in one year.