Moons and Their Characteristics

What are natural satellites called?

• Stars

• Moons

• Asteroids

• Meteoroids

Which planet does not have any natural satellites?

• Mars

• Venus

• Jupiter

• Saturn

What is the moon also known as?

• Sol

• Luna

• Ganymede

• Titan

How old are lunar rocks brought back by Apollo astronauts?

• 1.2 billion years

• 2.3 billion years

• 4.6 billion years

• 5.1 billion years

What does the similarity between the moon's composition and Earth’s mantle suggest?

• Moon formed from an asteroid

• Moon was captured by Earth’s gravity

• Moon formed after a collision with Earth

• Moon came from Mars

How does the moon’s surface appear from Earth?

• Smooth and shiny

• Cratered with dark and light areas

• Covered in water

• With visible volcanoes

What is the moon's surface gravity compared to Earth’s?

• 10%

• 16%

• 25%

• 50%

What is the moon’s period of rotation?

• 14 Earth days

• 27 Earth days, 9 hours

• 29 Earth days

• 32 Earth days

What caused part of Earth’s mantle to blast into space?

• A meteor shower

• Volcanic eruption

• Collision with a large object

• Gravitational pull from the sun

What caused the debris to form into a sphere?

• Solar winds

• Gravity

• Magnetic fields

• Earth’s rotation