2024-03-04 03:23:20
It has this meaning
Earth (land + ball)
The third closest planet to the sun and a celestial body where humans live.
-> The Earth was created about 4.6 billion years ago.
The ‘Earth’ we live on belongs to the solar system. It is the only celestial body in the solar system that has life, and the moon revolves around it. The circumference of the Earth is about 40,000 km. An atmosphere of nitrogen and oxygen surrounds it. The ocean accounts for about 70% of the Earth.
Planet (travel + star)
A celestial body that orbits a central star and does not emit its own light.
-> There are 8 planets in the solar system.
A celestial body that emits its own light, like the sun, is called a ‘star.’ A celestial body revolving around this star is called a ‘planet.’ In the solar system, planets such as Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Uranus revolve around the sun.
Satellite (Jekil + star)
A celestial body revolving around a planet.
-> The moon is Earth’s satellite that orbits around the Earth.
A ‘satellite’ is a celestial body that orbits a planet, like the moon orbiting the Earth. Earth’s only satellite is the moon, but Mars has two, and Jupiter and Saturn each have about 60. Jupiter’s representative moons include Io and Europa, and Saturn has Titan.
Autobiography (self-reflection + self-reflection)
A phenomenon in which a celestial body rotates around a fixed axis.
-> The virtual fixed axis that is the center of rotation is called the ‘rotation axis’.
Planets and satellites ‘rotate’. The Earth has an imaginary rotation axis connecting the South Pole and the North Pole. It rotates once a day around its axis, which creates day and night. The Earth’s rotation speed is very fast, about 1,600 km/h.
Gongjeon (公 to be changed + 轉 to be changed)
A phenomenon in which another celestial body periodically orbits around one celestial body.
-> The Earth revolves around the sun once a year.
The planets of the solar system, including Earth, ‘orbit’ around the sun. Because of this revolution and rotation, seasons and constellations change. The moon orbits the Earth once every 27.3 days on average. The position and shape of the moon changes every night.
Japanese eclipse (day 日 + gnaw 蝕)
A phenomenon in which the moon blocks the sun, making part or all of the sun visible.
-> In the past, people thought that the moon swallowed the sun during a solar eclipse.
A ‘solar eclipse’ is a phenomenon where the moon is between the sun and the earth and blocks the sun, like the sun-moon-earth. In a ‘total solar eclipse’, the moon completely blocks the sun, making daytime as dark as midnight. A ‘partial solar eclipse’ is when the moon covers only part of the sun.
/Material provided=’EBS Elementary School Eomat, where speaking becomes more enjoyable and writing becomes better! ‘Science Exploration Vocabulary Restaurant’ (Written by Hong-ok, illustrated by Mimnyung Kim, EBS BOOKS)
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