By revolving around Earth and rotating on its axis
100
The moon's gravity pulls more weakly on the water on this side of the Earth
The moon’s gravity pulls more weakly on the water on the far side of Earth than on earth as a whole
100
Describe Earth's moon
Earth's moon is dry and airless and has an irregular surface
100
What does the moon not produce?
The moon does not produce light
100
This happens during this phase of the moon :The gravity of the sun and moon pull in the same direction. Their combined forces produce a tide with the greatest difference between low and high tides, called a spring tide
****It is the first phase of the moon******
A new moon
200
What causes the phases of the moon and tides?
The Earth and Sun
200
What are tides caused by?
Tides are caused mainly by differences in how much gravity from the moon and the sun pulls in different parts of the Earth
200
What are Marias?
Huge, dark, flat, areas that are hardened rock formed from huge lava flows billions of years ago
200
Why is the moon always so cold or so hot?
It has no atmosphere
200
During this phase the sun’s pull is right angles to the moon’s pull
The first and third quarters
300
How long does it take for the moon to rotate its axis?
One year
300
The moon’s gravity pulls a little more strongly on the water on the side closest to the moon than on Earth as a whole. What is this side called?
The near side
300
The moon is this fraction smaller than the Earth's diameter
The moon is ¼ of Earth’s diameter
300
What does the moon reflect?
It reflects light from the sun
300
What are the temps of the moon during the day and at night?
Moon’s equator direct sunlight 130 C
Moons equator at night -170 C
400
Why does the same side of the moon always face Earth?
Because the moon rotates once on its axis
400
Spring tide comes from what?
Springen is an old English word meaning to jump
400
What are craters?
Craters are large round pits, and can be hundreds of kilometers across. They are formed by meteoroids
400
What are the different shapes of the moon you see called?
The different shapes of the moon you see on Earth are its phases.
400
What is thought to be the origin of the moon?
Scientists may have many theories, but one that many agree upon was that a planet sized object collided with the Earth.
500
What does the face of the moon you see depend on?
The phase of the moon you see depends on how much of the sunlit sided of the moon faces Earth
500
What is a neap tide?
A neap tide is a tide with the least differences between consecutive low tides and high tides
500
The launch of this sparked the space race
The launch of Sputnik 1 by the Soviet Union sparked the Space race
500
The phases of the moon (in order)
What is new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent.
500
This was the first space craft to land on the moon
Apollo 11 was the first space craft to land successfully on the moon