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Essential information about the earth, sun, and moon, focusing on their rotation and revolution. Learn about the earth's axial tilt causing seasons, its orbit around the sun, and the moon's satellite status. Key concepts include the earth's rotation taking 24 hours, its revolution taking 365 days, and the moon's lack of atmosphere.
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The Earth is the 3 rd^ planet from the Sun. It supports life because it has water and oxygen. It has a protective atmosphere that blocks out most of the Sun’s damaging rays and protects it from small objects floating in space. It is made mostly of rock.
The Moon revolves around Earth (it is a satellite of Earth). It is 240,000 miles away and is ¼ the size of Earth. There is NO atmosphere. It has no air, wind or liquid water. It reflects the light of the Sun.
The Sun is made of hot, glowing gases. It is about 93 million miles away.
Rotation = A single complete turn
The Earth rotates on an imaginary line called an axis , which runs through Earth from the North Pole to the South Pole.
The rotation of the Earth causes day and night. One complete rotation of the Earth takes 24 hours or 1 day As it rotates, one side of Earth faces the sun. This side has daytime. The side of Earth facing away from the sun has nighttime.
Gravity pulls Earth toward the Sun, holding it in orbit.
Orbit is the path that an object takes around another object.
Earth revolves or travels around the Sun.
It takes Earth about 365 days or 1 year to complete one revolution around the Sun.
Earth rotates on a tilted axis.
Earth’s axis is always tilted in the same direction. The Earth has seasons because it revolves around the Sun on a tilted axis.
The Earth is divided into halves called hemispheres
The Northern Hemisphere extends from the equator to the North Pole.
The Southern Hemisphere extends from the equator to the South Pole.
The part of the Earth that tilts toward the Sun will get more direct sunlight and will experience summer.
The part of the Earth that tilts away from the Sun will get less direct sunlight and will experience winter.