Lunar Test

What is the best theory on the formation of the moon right now?

• the moon is a captured protoplanet

• the moon is the result of a collision with a large object early in formation of the solar system.

• The moon and the earth formed at the same time orbiting each other

• the moon was made of dust from meteor showers

The point in the orbit of the moon that is nearest to the Earth.

• solstice

• apogee

• equinox

• perigee

The moon is slowly...

• getting closer to the earth

• getting further from the earth

• getting bigger in diameter

• getting smaller in mass

This causes the Moon's orbital and rotation periods to be the same.

• synchronous rotation

• ecliptic plane

• impact crater

• regolith

On average, how far is the Moon from the Earth?

• 20,900 miles

• 239,000 miles

• 23 million miles

• about 3 light years

Is there gravity on the Moon?

• No!

• Yes, just like on Earth

• Yes, but weaker than on Earth

• Yes, but stronger than on Earth

The phases of the moon are caused by...

• the shadow of the earth

• the position of the moon and how sunlight hits it

• the dark rocks on the front of the moon

• a reflection of light from Earth

When did the Moon form?

• About 4.5 billion years ago right after the Earth was formed

• About 20,000 years ago when dinosaurs were here

• About 4.5 million years ago right after the Earth was formed

• 13.6 billion years ago

Why is the Moon's gravity mainly responsible for tides on Earth instead of the sun?

• The Moon is much denser than the Sun

• The Moon is much closer than the Sun

• The Moon is much larger than the Sun

• The Moon is much hotter than the Sun

Tides on Earth are caused by....

• the gravitational pull of the moon and sun

• the fast rotation of the earth

• the rotation of the sun

• the rotation of the moon