Exploring Space Chapter 1

Front

What is Ursa Major an example of? Options: Zodiac, Constellation, Astrology, Parallax

Back

Constellation

Front

Approximately how many days does the Sun take to revolve around the celestial sphere?

Back

365.25 days

Front

What happens when the Moon is between the Earth and the Sun?

Back

The Moon appears as the palest sliver of moonlight.

Front

Why does it look as if Mars is going backward for a time?

Back

Earth moves faster than Mars in its orbit.

Front

Why did the ancient Greeks study astronomy?

Back

To understand how the universe works

Front

What did Thales of Miletus believe about the Sun and other stars?

Back

They were balls of fire.

Front

What controlled all motion in the universe, according to the Pythagoreans?

Back

A central “fire”

Front

What effect did Aristotle notice that helped support his belief that Earth was the center of things? Options: Parallax effect, Zodiac effect, Ecliptic effect, Celestial effect

Back

Parallax effect

Front

What did Ptolemy believe the universe was based on? Options: Elliptical orbits, Perfect circles, Irrational movement of stars, Gravitational pull of the Sun

Back

Perfect circles

Front

What was the midpoint between the imperfect Earth and the perfect heavens, according to Ptolemy? (Options: The Sun, Mars, The Moon, Ursa Major)

Back

The Moon