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# Section 1 Earth in space

## How does Earth move in space?

Earth moves through space in two ways. Rotation and Revolution.

the imaginary line that goes through Earth's center and the North and south poles is Earth's axis.

The spinning of Earth on it's axis is called rotation.

In addition to Earth rotating on it's side, Earth travels around the sun. This is called a revolution.

Usually, most places outside the tropics and polar regions have four distinct seasons; winter, spring,summer, and autumn. But the temperature has

Most places outside the tropics and polar regions have four seasons: winter, spring, summer, and autumn. But there is often a great temperature change from place to place, like it is warmer near the equator than near the poles. Why is this?

Earth has seasons because it's axis is tilted as it revolves around the sun.

Sunlight rays hit the equator directly, while sunlight rays hit the polar regions on earth at a very steep angle. Therefore, that is why it is warmer near the equator rather then the polar regions.

# Section 2 Gravity and Moon

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

Earth Revolves around the sun in a nearly circular orbit. The moon orbits the earth in the same way. But what keeps the Earth and Moon in orbit?

A force is a push or pull. Isaac Newton realized that the force that holds the moon in orbit acts over a long distances between objects that are not in contact.

A force called gravity attracts all objects toward each other. Although Isaac Newton did not discover gravity, he was the first person to discover that it occurs everywhere.

Newton's Law of universal gravitation states that every object in the universe attracts every other object in the universe.

The force of gravity between two objects depends on two factors: the masses of objects and the distance between them.

## what two factors combine to keep the moon and earth in orbit?

Because of the Law of universal gravitation, it states that all objects around you, are pulling on you just as you are pulling on them. But why can't we notice the pull between us and another object?

It is because the strength of gravity depends on the masses of each object.

Mass is the amount of matter in an object.

Earth exerts so much greater force on the moon, because of it's massive size. Therefore, the earth is large enough to keep the moon in orbit. The moon also exerts a gravitational pull on earth as well.

The force of gravity on an object is called weight.

# section 3 Phases, Eclipses, and tides.

## What causes the phases of the moon?

Like earth, the moon moves through space in two ways, the moon revolves around the earth and rotates on it's axis. As the moon revolves around earth and rotates on it's own axis.

The changing positions of the moon, earth, and sun cause the phases of the moon, eclipses, and tides.

The different shapes of the moon you see from earth are called phases. The moon makes one set of phrases each time it makes one revaluation around earth.

The phase of the moon you see depends on how much of the sunlit side of the moon faces earth.

## What are solar and lunar eclipse?

When the moon's shadow hits Earth or Earth's shadow hits the moon, an eclipse occurs.

When an object in space comes between the sun and a third object, it casts a shadow on that object, causing an eclipse.

A solar eclipse occurs when the moon passes directly between Earth and the sun, blocking sunlight from Earth.

During most months, the moon moves near Earth's shadow but not quite onto it.

A lunar eclipse occurs when he full moon when Earth is directly between the moon and the sun.

## What causes the tides?

Have you ever built a sand castle on the beach to only get it washed away by rising water?

This is an example of tides, the rise and fall of ocean water that occurs every 12.5 hours. The water rises every six hours and falls every six hours.

Tides are caused mainly by differences in how much the moon's gravity oulls on different parts of Earth.

# Section 4 Earth's moon

## what features are found on the moon's surface?

Recent photos of the moon show more detail than Galileo could see with his telescope.

Features on the moon's surface include maria,craters,and highlands.

The moon has flat, dark areas which is called maria by Galileo.

Galileo saw that the moon is marked by large pits called craters.

Galileo correctly inferred that the moon's surface has highlands, or mountains.

## What features are found on the moon's surface?

Would you want to take a vacation to the moon? At an average distance of about 384,000 kilometers, the moon is the closest neighbor to earth.

despite the distance, the moon is very different from the earth, the moon is dry and airless. compared to earth, the moon is small and has large variations in it's surface temperature.

Size and density; The moon is 3,476 kilometers in diameter, a little less than the distance across the U.S.

Temperature and Atmosphere; On the moon's surface, temperatures  range from a torrid 130 degrees Celsius in direct sunlight to a frigid -180 degrees Delicious at night.

Water; The moon has no liquid water. However, scientist are predicting and there is  evidence that there are large ice patches near the moon's poles.

## How did the moon form?

The theory of the moon's origin seems to best fit int the collision-ring theory.

Scientists believe that about 4.5 billion years ago, when earth was very young, the solar system was full of rocky debris. some of this debris could of been the size of some planets.

Scientist theorize that a planet-sized object collided with earth to form the moon.

## Sweet 16 moon party

This is going to be so funn! Excited for all of you to be there!

This will be on the last day of school to kick off summer!

There will be Moon dancing, star gazing, And more! Snacks will be provided.

Remember to wear your favorite galaxy outfit!

When: May 27

Where: On the moon of course!

Who: Micheal Jackson's 16th Birthday Party!

Hope to see you there!

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JennyCampbell (+5) 2 years ago
vanek_32 (+5) Organizer

## We will be selling Galaxy Leggings at the party!

Be sure to look into it; Galaxy leggings from sizes small to large!

### Comment Stream

2 years ago
0

Good Job. What are you selling?

2 years ago
0

Nice job. I like the pictures. Galaxy Leggings?

2 years ago
0

great job!