Why Does the Moon Change Shape?

What is the opposite of 'sliver'?

• Thin

• Narrow

• Thick

• Slim

What does the section 'Our Place in Space' describe?

• It describes the objects in our solar system.

• It explains the history of space exploration.

• It outlines the theories of black holes.

• It discusses the possibility of extraterrestrial life.

What is a 'gibbous' Moon?

• A gibbous Moon is when more than half of the Moon is illuminated.

• A gibbous Moon is when the Moon is completely dark.

• A gibbous Moon is when the Moon is less than half illuminated.

• A gibbous Moon is when the Moon appears as a thin crescent.

What word means the same as 'crescent'?

• Curved

• Linear

• Flat

• Angular

What do we call the full cycle of the Moon's phases?

• A lunar month

• A solar month

• A lunar cycle

• A solar cycle

What is the term for the time it takes for the Moon to orbit the Earth?

• 25.5 days

• 27.3 days

• 30.0 days

• 28.5 days

What is the term for the lighter part of the Moon's shadow?

• Umbra

• Penumbra

• Antumbra

• Shadow Zone

What happens during a lunar eclipse?

• The Moon blocks sunlight from reaching the Earth.

• The Earth blocks sunlight from reaching the Moon.

• The Sun blocks sunlight from reaching the Earth.

• The Earth reflects sunlight onto the Moon.

Who studies the planets, stars, and sky?

• Geologists

• Biologists

• Astronomers

• Meteorologists

What is the Moon's shape when it is less than half full?

• Crescent

• Gibbous

• Full

• Quarter