CH22 TEST REVIEW 'ORIGIN OF MODERN ASTRONOMY'

Front

What is retrograde motion?

Back

Retrograde motion is the apparent backward movement of a planet as observed from Earth, which cannot be adequately explained by the geocentric model.

Front

Who first proposed the geocentric model of the solar system?

Back

Ptolemy proposed the geocentric model of the solar system.

Front

Which ancient astronomer created detailed models of an Earth-centered universe?

Back

Ptolemy created detailed models of an Earth-centered universe.

Front

What is the period of precession?

Back

The period of precession is approximately 26,000 years.

Front

What shape does the axis of Earth trace in the sky due to precession?

Back

The axis of Earth traces a circle in the sky due to precession.

Front

What is the geocentric theory?

Back

The geocentric theory is the astronomical model that places Earth at the center of the universe, with all celestial bodies orbiting around it.

Front

Who challenged the geocentric model with the heliocentric theory?

Back

Copernicus challenged the geocentric model with the heliocentric theory, which places the Sun at the center of the solar system.

Front

What is the significance of Tycho Brahe in astronomy?

Back

Tycho Brahe made precise astronomical observations that laid the groundwork for Kepler's laws of planetary motion.

Front

What did Galileo contribute to the understanding of the solar system?

Back

Galileo used a telescope to observe celestial bodies, providing evidence for the heliocentric model and discovering moons of Jupiter.

Front

What is the main difference between the geocentric and heliocentric models?

Back

The geocentric model places Earth at the center, while the heliocentric model places the Sun at the center of the solar system.