How do we know the earth is turning when we don't feel the movement?

Question

When we stand on an object that rotates, we feel it moving, even when we stand in the center. so how can we clearly say the earth has just made a rotation when we did not feel the movement or turn alongside with the earth.

Answer 1

We can feel the motion of a rotating platform because our frame of reference isn't really the platform; it's Earth. Even if our eyes are closed so we can't see our own motion, we feel the air resistance and Earth's gravity telling us that we're moving. But on the rotating Earth, essentially our frame of reference is the platform. We don't feel air resistance due to rotation, because the air is moving with the Earth. The Earth's gravitational pull also doesn't expose the movement, because Earth's gravity is an instrinsic part of the planet, and the motion of the planet itself can't be measured relative to it. We know the planet is rotating because of how the stars and other objects appear to move relative to an observer.

Answer 2

We know the earth is turning because the "fixed" stars appear to move in the nighttime sky. Now, long ago, people thought that stars, sun, moon, etc. all revolved around the earth. But -- the earth rotating is a much better explanation for the observations, than having other things move around the earth.

Answer 3

The reason you don't feel the motion of the earth turn is because compared to the enormity of the earth the individual person is so small. And by comparison, the earth moves very slow. To give you some idea of how small, the earth's diameter is 12,756.3 km (7926.397 mi) or 12,756,300 m (41,851,250 ft). The 'averge' human being height or stature, is between 1.5 m (5 ft) and 1.8 m (6 ft). Let's just say that the tallest average is 1.8 m (6 ft) That calculates to be about 1/7,086,833.33 m (1/6,975,208.33 ft) or 0.000014% the size of the earth.

Answer 4

Earth moves very fast. It spins (rotates) at a speed of about 1,000 miles (1.7 kilometers) per hour and orbits around the sun at a speed of about 67,000 miles (107,000 kilometers) per hour. We do not feel any of this motion because these speeds are constant. The spinning and orbital speeds of Earth stay the same so we do not feel any acceleration or deceleration. You can only feel motion if your speed changes. For example, if you are in a car which is moving at a constant speed on a smooth surface, you will not feel much motion. However, when the car accelerates or when the brakes are applied, you do feel motion.

Answer 5

Reference frames of motion. See Eienstein.
Too, gravity from below and the atmosphere from above provide stable pressure and we move as part of the unit of earth that is rotating.

Answer 6

the sun never moves, if the earth did not rotate then one side of the planet would always recieve light so night and day tells you the planet has rotated on its axis

Answer 7

because its rotating really slow..and with all the factors contributing to the fact that we cant feel it is really many. FOr example, we are too focused in what we';re doing, we are more conscious in what we are doing and the sounds that we hear , on the things that moves around us and the vibrations that are happening...get my drift?...there is too many contributing factors the disables us to feel the movement.

Answer 8

we get day and night because of rotation. Relative to sun, we are revolving and rotating on its axis.

Answer 9

Because the sun continues its constant motion.

Answer 10

It's spinning so fast that it holds up down. You can related it to when you swing an open bag or purse over your head in circles very fast, nothing spills out.