Solar System Theories
Planets
Planets continued
Comets, meteoroids, asteroids, small solar system bodies
Retrograde motion and other cool stuff
100

Provided a workable model of the sky and the most important objects in it

What is the geocentric theory 

100

The fastest revolving planet due to its distance from the sun.

What is Mercury

100

The name of the event when inferior planets are observed to pass in front of the sun

What is transti

100

Astronomers designate comets that appear two or more times as______ comets. Why do we call some comets periodic comets?

What are periodic comets? Some comets are called periodic comets because they reappear ar regular, predictable intervals. 

100

Explain retrograde motion

A planet displays retrograde motion when it appears to stop its forward motion, move backward, and then return to its forward motion. This occurs when a planet passes a slower-moving planet.

200

This early assumption of the heliocentric theory caused inaccuracies in many of its calculations.

What is planets moved in circular orbits. 

200
Is not a characteristic of all known planets

A. Orbits in an elliptical path

B. has a rotational axis

C. revolves around the sun

D. has one or more moons

200

The planets that are beyond the Earth's orbit 

What are superior planets 

200

The scientific name for a shooting star

What is meteor

200

Which is the correct order of possible occurrence

meteoroid, meteor, meteorite

300

The reason certain Christian philosophers in the Middle Ages argued that the Ptolemaic model agreed with the Bible

What is it seemed to support the central importance of man and the Earth

300

The pair of terms that apply to the planet Mars

What is superior and terrestrial 
300

The two things that your protective suit would have to save you from if you were to stand on the ground on Venus

High temperature and high pressure of the environment 

300

List and describe the groups of small solar system bodies. 

Asteroids are small solar system bodies that are large enough to be seen with a telescope and usually lie between the orbits of Mars and Jupiter. Comets are small solar system objects that orbit the sun and are made in different ices. Meteoroids are similar to asteroids but are smaller. 

300

According to Kepler's second law, planets move ______ when at their aphelian and _______when at their perihelion.

slowest, fastest 

400

Planetary models were greatly improved by the precise and accurate observations of this astronomer

Who is Tycho Brahe

400

The collection of small solar system bodies that lie beyond Neptune's orbit 

What is the Kuiper Belt

400

The most unusual feature of Uranus compared with the other planets in the solar system 

What is its tilt 

400
List all of the small solar system bodies

asteroids, comets, and meteoroids

400
Copernicus believed that the Ptolemais system was too ______ to represent the actual arrangement of the heavens. 

complicated or complex

500

The great philosophical shift in the importance of humans in the universe that followed acceptance of the heliocentric theory became known as 

What is the Copernican Revolution?

500

Saturn and the other gas giants are considered this kind of planet

What is Jovian planet

500

Describe terrestrial planets

Terrestrial planets are similar to Earth. They are close to the sun and have rocky surfaces. 

500

The asteroid belt lies between the orbits of these two planets

Mars and Jupiter

500

What is an optical illusion 

A superior planet's retrograde motion 

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