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Why is the Earth called a unique planet?(e) Why do we see only one side of the moon alway() What is the Universe ?2. Tick the correct answer.(a)The planet known as the “Earth's Twin" is |
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Answer» d. Earthis the onlyplanetin our solar system that has a large amount of liquid water. About 74% of the surface ofEarthis covered by liquid or frozen water. Because of this, people sometimes call it "blueplanet". Because of its water,Earthis home to millions of species of plants and animals. e. Onlyone side of the Moonis visible from Earth because theMoonrotates on its axis at the same rate that theMoonorbits the Earth – a situation known as synchronous rotation, or tidal locking. TheMoonis directly illuminated by the Sun, and the cyclically varying viewing conditions cause thelunarphases. f. Universe is the name that we use to describe the collection of all the things that exist in space. It is made of billions of stars and planets and enormous clouds of gas separated by a gigantic empty space which is called the universe. Astronomers can use telescopes to look at very distant galaxies. |
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