Earth, Sun, and Moon

BY: Allison Schultz

Earth in Space

How does Earth move in space?

Earth's rotation, and revolutions is how it moves through space. Earth spins on its axis, called, rotating, as it rotates it revolves around the sun. Revolution is when one object goes around another.

What causes the cycle of seasons on Earth?

The Earth has seasons because of earth's tilt as it revolves around the sun. Different parts of earth tilt toward the sun, also the sun hits it at different angles. The middle gets the most direct and the poles get less direct sunlight. Earths revolving is causes summer and winter, the axis is tilted away for half a year as it revolves

Gravity and Motion

What determines the strength of force of gravity between two objects?

The Strength of the force of gravity between two objects depends on two factors: the mass of the objects  and the distance between them.mass is the amount of matter in an object.

What two factors combine to keep the moon and Earth in orbit?

Newton concluded that the two factors inertia and gravity combined help keep the Earth in orbit around the sun and the moon in orbit around the Earth.

Phases, Eclipses, and Tides

What causes the phases of the moon?

The phases of the Moon depend on its position in relation to the Sun and Earth. As the Moon makes its way around the Earth, we see the bright parts of the Moon's surface at different angles. These are called "phases" of the Moon.

What are solar and lunar eclipses?

A lunar eclipse occurs when the Earth passes between the Moon and the Sun, and the Earth's shadow obscures the moon or a portion of it. A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking all or a portion of the Sun. An eclipse can be total, partial, or annular.

What causes the tides?

The gravitational attraction of the moon causes the oceans to bulge out in the direction of the moon. Another bulge occurs on the opposite side, since the Earth is also being pulled toward the moon (and away from the water on the far side). Since the earth is rotating while this is happening, two tides occur each day.

Earth's moon

What features are found on the moon's surface?

features on the moon's surface include maria, craters, and highlands. The moons surface has dark, flat areas, which Galileo called maria- the Latin word fro "seas". Galileo saw that the moon's surface is marked by large round pits called craters. Scientists now know that these craters were caused by the impacts of meteoroids, chunks of rock or dust from space.

What are some characteristics of the moon?

The moon is dry and airless. Compared to Earth, the moon is small and has large variations in its surface temperature. The moon id 3,476 kilometers in diameter, s little less than the distance across the United States. On moon's surface, temperatures range from a torrid 130 degrees Celsius in directs sunlight to a frigid -180 degrees Celsius at night. The moon has no liquid water. There is evidence that that there may be large patches of ice near the moon's poles. Some areas are shielded from sunlight by crater walls.

How did the moon form?

The moon was formed~4.5 billion years ago, about 30–50 million years after the origin of the Solar System, out of debris thrown into orbit by a massive collision between a smaller proto-Earth and another planetoid, about the size of Mars.

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