Eclipses

Compared to the Sun, what is the apparent size of the Moon in the sky?

• slightly bigger
• about the same size
• slightly smaller
• considerably smaller

Which generic term is used when one object passes into the shadow of another object?

• terminator
• eclipse
• occlusion
• solstice

When the Moon blocks the Sun, it's called a _____

• solar eclipse
• lunar eclipse
• partial occlusion
• new Moon

When the Earth blocks the Sun, it's called a _____

• solar eclipse
• lunar eclipse
• partial occlusion
• new Moon

How long does it take for the Moon to complete an orbit of the Earth?

• one day
• one week
• one month
• one year

The Earth orbits the Sun once per _____

• day
• week
• month
• year

The Moon’s orbit is tilted with respect to Earth’s, by about _____

• 5°
• 15°
• 25°
• 29.5°

During a solar eclipse, what is the phase of the Moon?

• new moon
• first quarter
• full moon
• third quarter

What is the innermost and darkest part of a shadow called?

• umbra
• penumbra
• antumbra
• terminator

Which word means “almost” or “nearly” in shadow?

• umbra
• penumbra
• antumbra
• partumbra