Astronomy Snapshot #1 Review

The apparent shifting of nearby objects with respect to distant ones as the position of the observer changes is called:

• Peristalsis

• Ex-Lax

• Periscope

• Parallax

The two most famous believers of the geocentric model of the universe were:

• Orville and Wilbur Wright

• Kepler and Tycho Brahe

• Copernicus and Galileo

• Aristotle and Ptolemy

Kepler's 1st Law of Planetary Motion states that each planet's path around the Sun is in the shape of a/an:

• Ellipse

• Ecliptic

• Circle

• Rhombus

Ptolemy hypothesized that planets travel in circular orbits centered around the Earth. He called these circular orbits __________.

• Ellipses

• Epicenters

• Epicycles

• Epic Cycles

Geocentric models place the _______ at the center of the universe?

• Sun

• Moon

• Earth

• Stars

________________ developed three laws of planetary motion.

• Tycho Brahe

• Aristotle

• Johannes Kepler

• Galileo Galilei

The second law of planetary motion has to do with the changing speeds of planets. As a planet gets closer to the sun it _________, and as it gets further away from the sun it _____________.

• Speeds up, maintains constant speed

• Speeds up, slows down

• Slows down, speeds up

• Slows down, maintains constant speed

The astronomer who is credited with developing a Heliocentric (sun-centered) system is:

• Copernicus

• Galileo

• Ptolemy

• Aristotle

What is the name for the group of constellations the Sun passes through on its apparent path along the ecliptic?

• Galaxies

• The Zodiac

• Jupiter

• The Ecliptic

Kepler’s third law of planetary motion implied that __________ holds the planets near the Sun.

• Gravity

• The Force

• Magnets

• Inertia