Science

How long does it take the Earth to rotate?

24 hours

How does scientist think the moon was formed?

A large object struck Earth and ejected material from the collision combined

How was Maria formed?

By ancient lava flows

What is the main cause of tide?

Differences in how much the moon pulls on different parts of Earth.

What cause day and night on Earth?

Earth's rotation on its axis

How large is the moon compared to Earth?

Earth? About 4 the diameter of Earth

When does lunar eclipse occurs?

Full moon

What two factors keeps the Earth and the moon in their orbit?

Gravity and inertia

Why does Earth have seasons?

Its axis is tilted as it moves around the sun

What two factors effects the strength of the force of gravity?

Mass of the objects and the distance between them

Where can you find water on the moon?

Near the poles

Why does the temperature on the moon fluctuates so much?

No atmosphere

Where is total solar eclipse visible?

Only within the moon's umbra

What causes total lunar eclipse?

The moon is in Earth's umbra

How does solar eclipse occurs?

The moon must be directly between Earth and the sun

Why are you less likely to see total eclipse than lunar eclipse?

The moon's umbra only covers a small area orn Earth's surface

When do neap tides occur?

When the sun's pull is at right angles to the moon's

When is the tide highest?

When the sun, earth, and the moon are nearly in line (Spring tide)

Do we ever see the far side of the moon on Earth?

Why? No because the moon rotates once for each revolution around Earth.

The summer solstice occurs in the Southern Hemisphere when the sun is

farthest south

The phase of the moon you sce depends on

how much of the sunlit side of the moon faces Earth

What would happen to the gravitational force between Earth and the moon if the Earth's mass increased?

increase

What two times are the moon lighted the same?

lighted First quarter and third quarter

How long does it take Earth to go around the sun?

one vear

Explain the of the Earth and what is happening in the Northern Hemisphere and Southern Hemisphere. When

the Hemisphere. When the Earth's axis is tilted toward the sun, North America will experience more direct rays and longer days (summer) and Southern Hemisphere will have less direct rays and shorter days (winter).