Is the world flat or round

ROUND

Explanation:

because the earth is not flat

Well, that's quite a controversial question you're asking there!

Based on the scientific evidence we have, the earth is round. Sure, the Flat Earth organization may disagree, but it is important that we trust science.

An example of this that most of us have seen in our lifetimes is the Lunar Eclipse. As scientist Neil deGrasse Tyson put it, "Earth passes between the moon and sun, so that the sun projects Earth’s shadow onto the Moon in the night sky."

Another scientist states, "Watch the sunset from point A, and once the sun is out of sight, hurry on over to point B. With the added elevation provided by point B, you should be able to see the sun above the horizon. If Earth were flat, the sun would not be visible at any elevation once it had set. Because Earth is round, the sun will come back into your line of sight."

I hope I helped!

(Please don't argue in the comments. We're all friends!)

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

there is none because earth is stationary and flat.