Astronomy Quiz

What is the cycle length of the lunar phase?

• 28 days

• 29.5 days

• 30 days

• 31 days

What causes the changing appearance of the Moon's illuminated portion?

• Earth's rotation

• Moon's rotation

• Sun's rotation

• Relative positions of Earth, Moon, and Sun

Which phase of the Moon occurs when the Moon is completely illuminated?

• New Moon

• Waxing Crescent

• First Quarter

• Full Moon

What primarily causes tides on Earth?

• Gravitational pull of the Moon and the Sun

• Earth's rotation

• Ocean currents

• Wind patterns

How many high tides occur in a 24-hour period?

• One

• Two

• Three

• Four

During which moon phases do spring tides occur?

• New Moon and Full Moon

• First Quarter and Third Quarter

• Waxing Crescent and Waning Crescent

• Waxing Gibbous and Waning Gibbous

What are eclipses?

• Celestial bodies colliding

• Celestial bodies passing into the shadow of another

• Celestial bodies aligning in a straight line

• Celestial bodies exploding

During a total solar eclipse, what is visible?

• Only the Sun's outer atmosphere

• The entire Moon

• A dark bite taken out of the Sun

• A ring of fire around the Moon

What causes black holes?

• Gravitational collapse of massive stars

• Supernova explosions

• Collision of celestial bodies

• Formation of dark matter

What is the region within a black hole called?

• Event horizon

• Singularity

• Black void

• Gravitational pull