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).
