What is the Celestial Sphere?

• A solid sphere located beyond the planets

• A transparent, hollow sphere located beyond the planets

• The Earth's atmosphere

• The Sun's orbit

What is the Celestial Equator?

• The line dividing the Earth into Northern and Southern Hemispheres

• The Sun's path on the celestial sphere

• • The projection of Earth’s equator in the celestial sphere.

• A constellation's path in the sky

During the Summer Solstice, the Sun is at its:

• Southernmost point

• Highest point in the sky

• Northernmost point

• Equatorial point

When does the Winter Solstice occur?

• On or near June 21.

• On or near December 21

• On or near September 22

• On or near March 21

What are Equinoxes?

• Points where the ecliptic intersects the celestial equator.

• The longest and shortest days of the year

• Times when the Sun is at its highest and lowest points

• The moments when the Moon blocks the Sun

When does the Autumnal Equinox occur?

• On or near March 21

• On or near June 21

• On or near September 22

• On or near December 21

What is a Constellation?

• A group of planets.

• A group of stars.

• The Earth's shadow on the Moon.

• A comet's tail.

What is the Zodiac?

• A single star

• The Earth's path around the Sun

• A sequence of constellations

• The path of the Moon.

What is the Precession of the Equinoxes?

• The daily rising and setting of the sun.

• The annual revolution of the Earth around the Sun

• The slow change in the orientation of the Earth’s rotational axis

• The shift in the position of the equinoxes relative to the background stars

What is Diurnal Motion?

• The yearly path of the Sun

• The Earth's rotation about its axis causing daily rising and setting of celestial objects.

• The motion of the Moon around the Earth.

• The precession of the equinoxes.