5 Written questions
5 Matching questions
- At what point in a planetary orbit is that planet's speed the slowest?
- Which of the following characteristics of an astronomical telescope is the most important for determining the angular resolution?
- What evidence do we have that the Sun contains the element iron?
- In the geocentric model of the solar system developed by Ptolemy, the planets move
- The main reason for building large optical telescopes on the Earth's surface is to
- a in circular epicycles while the centers of the epicycles move in circular orbits around the Earth.
- b Solar spectra show absorption in spectral lines that are characteristic of iron and are unique to it.
- c at aphelion.
- d diameter of the objective lens or mirror.
- e collect more light from faint objects.
5 Multiple choice questions
- its synodic period.
- distance that light travels in one year.
- violet light has a shorter wavelength than red light.
5 True/False questions
the energy flux, F, from a star is the amount of → Sun-centered, with the planets moving in perfect circles around the Sun.
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.
According to modern atomic theory, light emitted by atoms originates from → the direction of an object's motion changes.
The position of an element in the periodic table is directly related to the → celestial equator and the star, measured along a great circle passing through both celestial poles.
In 1670 Isaac Newton performed a critical experiment on the nature of light when he → testing of prediction from a scientific theory or theoretical model.