Astronomy and Celestial Motion
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Astronomy and Celestial Motion

Created by
@ZippyPiano

Questions and Answers

What is the apparent daily motion of the sky from East to West called?

Diurnal motion

Which phenomenon results from the Earth's rotation on its axis?

Diurnal motion

What is the apparent yearly movement of the stars as observed from Earth called?

Annual motion

What is the apparent motion of a planet in a direction opposite to that of other bodies within its system called?

<p>Retrograde motion</p> Signup and view all the answers

What is the motion of the Earth which consists of a cyclic wobbling in the Earth’s axis of rotation with a period of 25,772 years called?

<p>Precession</p> Signup and view all the answers

What is the projection of a great circle onto the sky of the earth’s equator called?

<p>Celestial equator</p> Signup and view all the answers

Who proposed the geocentric model of the universe?

<p>Aristotle</p> Signup and view all the answers

Which model assumed the Sun to be at or near the central point with the Earth and other bodies revolving around it?

<p>Heliocentric Model</p> Signup and view all the answers

Who modified the heliocentric model by adding epicycles and uniform speeds for planetary orbits?

<p>Copernicus</p> Signup and view all the answers

Which type of motion refers to putting objects in their natural position such as the earth below water, water below air, air below fire, and all below others?

<p>Vertical Motion</p> Signup and view all the answers

Who proposed a model that had a series of 53 concentric, crystalline, transparent spheres rotating on different axes?

<p>Aristotle</p> Signup and view all the answers

Which type of motion pertains to the movement of chemical change like burning and decay?

<p>Alternation</p> Signup and view all the answers

Who proposed the homocentric model of the universe?

<p>Eudoxus</p> Signup and view all the answers

Which model claimed that the Earth is the center of the universe, with the sun and planets revolving around it?

<p>Geocentric Model</p> Signup and view all the answers

Who placed the Sun in the middle of the solar system and also placed the planets in the right order from the Sun?

<p>Aristarchus</p> Signup and view all the answers

Who is known for being a proponent of The Epicycle and Deferent and the Eccentric Model of Planetary Orbits?

<p>Ptolemy</p> Signup and view all the answers

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