What makes go around ?

Earth's rotation is a side effect of the formation of our solar system, which started as a massive cloud of gas and dust roughly 4.6 billion years ago. The cloud began to rotate as it scrunched together under its own gravity. The material at the center eventually became the sun, while whirlpools of dust and gas farther out spun faster and faster until they formed into planets. With nothing to stop its spinning motion, earth retained the rotational from its early days.

2)How faster does the earth spins?

The imaginary line halfway between the north and south poles earth rotates 1,037 mph (1670kph) along the equator, a speed rivaling that of a fighter jet at full cruise.

3) Why does the earth spin fastest at the equator?

That's where the earth is widest along its axis, so any point along the equator has a greater distance to travel during each daily rotation than any point closer to the place. Still confused? Think of a merry-go-round. The horse on the outside has a greater distance to travel around the carousel and thus moves faster than the inside.

4) Why don't I feel the earth spinning?

There are two reasons: gravity and the fact that you're traveling at the same speed as the ground beneath your feet. Just as airplane passengers don't sense the forward motion at the aircraft they're riding in (unless it suddenly speeds up or slows down), we don't notice the rate of Earth's rotation. We're traveling along with Earth's as it spins and held to the surface as it spins and held to the surface by its gravity along with the atmosphere around us, the bicycle and cars on the road, and the birds in the sky.

5) Space agencies.

Space agencies like NASA build their launch facilities closer to the equator to take advantage of Earth's faster rotation which gives rockets and shuttles a speed boost into orbit.

6) What would happen if the earth suddenly stopped spinning?

Buildings would topple. Mountains would crumble. Seas would slosh into your bedroom. if the earth suddenly put on the brakes, everything and everyone on it would suddenly hurl in the direction of the planet's former spin. (People who live closer to the equator where Earth's spin is the fastest would have the roughest ride). Gravity would keep us from flying into space, but the earth would become a different place even for those who live far from the equator. For starters, the worldwide system of time zones (created to adjust the local time based on the earth's rotation) would change drastically. A day would last a year (it would now take 365 days for the sun to return to its original place in the sky). Crops would wither. We'd all need to slather on heavy-duty sunscreen to survive six months of sunlight before bundling up for six months of night. The good news is that the nightmare scenario is a virtual impossibility.

Our planet's rotation is actually decreasing because of the moon's gravitational pull. Worry not; it will take millions of years for us to notice that our days and nights are just the teeniest bit longer.