mention three proofs of round shape of the earth
Answers
Explanation:
whenever u travel to one extreme flat end to the extreme end of the earth we 2ont fall as the earth is round
7 ways to prove the earth is round
Written by Erik Frenz | Mar 30, 2018 1:00:00 PM
The very round earth; image courtesy of iStock
There are few certainties in life: death, taxes, and the sun's rising in the east and setting in the west. Or does it rise on the left and set on the right?
Lately, as flat-Earth theorists have become more vocal, it seems as though people are more frequently asking questions of that very nature, and the movement is gaining ground. (Just this week, a flat-earth believer launched himself into space in a homemade rocket in an effort to disprove the round-Earth theory.) These questions go against every logical explanation of what we know to be true about our planet: mainly, that it is sphere-shaped and orbits the sun.
The rise in visibility of flat-Earth theories might be a product of what's rapidly becoming known as the "post-fact/post-truth era" in our society, in which an untruth repeated enough times becomes truth by groupthink. However, these theories existed long before the 2016 election cycle and have outlasted counterarguments from Aristotle, Ferdinand Magellan, NASA, and most rational-thinking humans.
Too often, the discourse about the shape of Earth becomes about proving negatives and centers on explaining that something isn't true rather than proving that it is. Indeed, the burden should be on flat-Earth theorists to explain clearly why their theories are correct and to use science to back those claims.
Fortunately, for every idea on why Earth might be flat, there is physical evidence that proves Earth is definitely globular. Here's a bunch of that evidence, and you don't even need to spend $1 million to launch yourself into space.
1. Watch a ship sail off to sea
Without being in the sky, it is impossible to see the curvature of the Earth. However, you can always see a demonstration of this if you visit a harbor or any place with a wide-open view of the water.
If you are able to watch a ship sail off to sea, watch its mast and flag as it fades off into the distance. You will notice that, in fact, it does not "fade off into the distance" at all; instead, you will see its mast and flag appear to slowly sink. The ship sailed beyond the point at which you would see it. Just to be sure, bring a pair of binoculars with you so that you can see even farther off into the distance.
It's as if you're watching it go over to the other side of a hill. This phenomenon can only be explained by a sphere-shaped planet.
2. Watch a lunar eclipse
Solar eclipses get all the attention, but if you are able to catch a glimpse of a lunar eclipse, you can see evidence that the Earth is, indeed, round. Here's how it works: Earth passes between the moon and sun, so that the sun projects Earth’s shadow onto the Moon in the night sky. You've probably seen a partial lunar eclipse without even noticing it; if the moon looks orange, that's a sign of a lunar eclipse. If you've ever seen a total lunar eclipse, you probably noticed that the shadow did not look like this.
A round shadow crossed over a round object. This does not sound like a thing that would happen if we were on a plane with all of the celestial bodies simply hovering overhead—or, perhaps more assinine, if the sun were orbiting Earth and not vice versa. The last total lunar eclipse took place on January 31, 2018, but it was not visible in most of the United States. Fear not, as you only have to wait a few months for one that will be visible in the Americas on July 27, 2018.
3. Climb a tree
Imagine a vast plane with but one tree smack in the middle. If the earth were flat, your vision would extend exactly as far while standing at the base of the tree as it would when at the top of the tree. However, the farther you climb, the farther your line of sight will extend to the horizon.
That's because parts of Earth that were concealed from view by its curvature are now revealed because your position has changed.
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Back to the vast plane. The naked eye can see objects that are millions of miles away in space. Theoretically, with a clear line of sight on a clear night, one would also be able to see bright lights from far-away cities. That this is not possible is further evidence of a round, not flat, Earth.