Solar System Models

What was the main reason why the heliocentric model made more sense than the geocentric model?

• it was simpler

• it fully explained planetary motion

• it explained why the stars were "fixed" in the night sky

• it did not require over 80 "circles within circles"

Tags

NGSS.MS-PS2-4

Why were planetary motions unpredictable?

• because they were representative of the Greek gods

• planets "wandered" or moved in backward loops unexpectedly

• ancient peoples had very little insight into the heavens

• they did not represent the stars so they were unpredictable

Tags

NGSS.MS-ESS1-2

The geocentric model of the universe was basically accepted for over one thousand years.

• True

• False

Tags

NGSS.MS-ESS1-1

Why was the Ptolemaic model of the universe accepted for so long?

• no one had ever thought of a better explanation

• people were prone to superstition

• it basically explained most of the movements of the planets

• religious & cultural reasons liked to put Earth at the center

Tags

NGSS.MS-ESS1-1

the astronomical model in which the Earth and planets revolve around the Sun at the center of the Solar System.

• Aristarchus

• accretion

• nebula

• heliocentric system

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

Which model of the Solar System is shown in the image?

• geocentric

• heliocentric

Tags

NGSS.MS-ESS1-1

Aristarchus (of ancient Greece) correctly predicted the _______ theory of the Universe.

• geocentric

• heliocentric

• earth-centered

• sun-centered

Heliocentric theory has the ____ revolving around the Sun, with only the ____ orbiting Earth.

• Moon, planets

• Moon, Sun

• stars, Moon

• planets, Moon

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

How did the heliocentric model of the Universe explain retrograde motion of the planets?

• orbital speeds led to the illusion of retrograde motion

• planetary motion was apparent and not real

• by using epicycles & deferents

• the model did not fully explain retrograde motion

Tags

NGSS.HS-ESS1-4

Why did Copernicus wait to publish his book on heliocentricity?

• there wasn't enough scientific data

• he wasn't sure if his theory was correct

• he was fearful of the repercussions

• the theory was originally Aristarchus' idea

Tags

NGSS.HS-ETS1-3