5 Written questions
5 Matching questions
- The position of an element in the periodic table is directly related to the
- Why were Newton's three laws so important to astronomy?
- The constellations
- If a modern astronomer describes a faint star as being in the constellation Cygnus, the Swan, you know that the star is
- The ecliptic can be defined as the
- a somewhere within a particular region of sky having definite boundaries.
- b number of protons in the atomic nucleus and hence its positive charge.
- c path traced out by the Sun in our sky over one year against the background stars.
- d Newton's laws showed that planets can move around the Sun by themselves forever, without coming to rest.
- e are 88 in number and cover the entire sky.
5 Multiple choice questions
- spectroscopy of the light emitted by the star.
- to obtain much better angular resolution or sharpness in the images.
- Light generates electrical charge on a computer-readable multielement array of detectors.
- energy emitted by each square meter of the star's surface each second.
- absorbs all radiation that falls on it.
5 True/False questions
In the system of celestial coordinates that matches latitude and longitude on the Earth, which in the coordinate that is equivalent to longitude? → Right ascension
Why was adaptive optics developed? → The air molecules scatter blue light better than red light, so more blue light reaches our eyes.
What is the half-life of a sample of matter containing radioactive element? → time needed for half the radioactive atoms in the sample to decay.
The term retrograde motion from a planet refers to the → temporary reversal of the planet's normal west-to-east motion past the background stars as seen from the Earth.
Refraction is the → distance that light travels in one year.