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Not Planets: Moon & Sun
Transcript of Not Planets: Moon & Sun
effect humans? Who discovered the Sun? How does the Sun affect Earth? The moon is a cold planet with no atmosphere and a surface filled with craters, rocks and dust (called regolith). The Moons diameter is 3474km, 27% the diameter of Earth. At an average distance, the Moon is about 385000 km from Earth. The Sun is a star in the middle
of the solar system. The average
distance from earth to
the sun is approximately
1.496×108 km. The Sun is
4.57 billion years old and
has a diameter of 1.392
million km(109 times the earth).
The mass is about 2×1030 kilograms
( 330 000 times of earth) Anaxagoras from Athens, Greece
around 450 BC
– got imprisoned
AD 1590, Giordano Bruno
– was burnt .
Galileo, Kepler, and Copernicus
during 16th and 17th centuries.
Only then was it proved that the Sun is a star. Heating: Sunlight carries energy that warms up the earth.
Weather: The atmosphere absorbs infra-red light radiated from the ground trapping the heat and keeping the ground warmer than usual. Heat travels with air and air flows one place to other this is what produces our weather Not Planets: Mo n & S n When was the Moon formed? Most scientists believe that the moon was formed when the Earth collided with a Mars-sized object. A material from that crash combined with the moon that went into orbit around the Earth. This collision occurred about 60 million years after Earth was formed (about 4.3 billion years ago). Tides are caused by the moons gravitational interaction with the Earth. The Moon also affects the motion and orbit of the earth. The moon does not orbit at the center of the earth, but they both revolve around the center of their masses called the barycenter. Moon developed intelligence and ideas in humans, technology development, and astronomers’ calculations.The moon helps us calculate the time, day and year. Also, the moon helps stabilizing earth's polar tilt, this keeps the seasons in place and is important for life to exist. Without the moon the earth would slowly move away from its current tilt, and the seasons would change intensely. Our moon is a critical part of our life systems on earth. How does the Sun affect humans? The food we eat is the result of sunlight falling on the plants, and the fuel we get either comes from these plants or was gathered by them in forms of oil natural gas etc. Our body needs water and without the sun the earth would just be an icy rock in space.With the Sun our Earth is the only planet in our solar system that is fit for life to exist. On Venus and mercury water would turn into steam and life on mars or farther planets would be impossible because water would freeze. Sunlight helps our body produce vitamin D. Lack of sunlight can cause seasonal effective disorder (SAD) and other problems. Made By: Avinash Kewalramani For more info. on the