Is the earth smoother than a cue ball?

Therefore, it would appear that a pool ball (even the worst one tested) is much smoother than the Earth would be if it were shrunk down to the size of a pool ball. However, the Earth is actually much smoother than the numbers imply over most of its surface.

Is a pool ball rougher than the Earth?

So is the Earth smoother than a billiard ball? No, not entirely. The 11 km maximum height difference I calculated above corresponds to about 50 micron, or 240-280 grit sandpaper. That being said, much of the Earth's surface is actually a lot smoother than a billiard ball.

Is Earth rounder than a bowling ball?

A good, professional-quality bowling ball is smoother than the Earth. Phil Plait, of Bad Astronomy, took a look at the claim that the Earth was smoother than a billiard ball. He concluded that the Earth was smoother but less round, based on published billiard ball roundness tolerances.

Is Earth extremely smooth?

The earth is “smooth” to about 1 part in 1000. The earth's diameter is roughly 8000 miles. The highest point on the globe is about 7 miles and the lowest is about 7 miles. We have a “ball” 8000 miles in diameter with bumps and creases 7 miles each.

What if a cue ball was the size of Earth?

The Earth's diameter is approximately 12,756.2 kilometres or 12,756,200 metres…. So, if a billiard ball were enlarged to the size of Earth, the maximum allowable bump (mountain) or dent (trench) would be 28,347 metres. Earth's highest mountain, Mount Everest, is only 8,848 metres above sea level.

A Ball That Bounces Higher Than Its Drop Height

Is the Earth a perfect ball?

Even though our planet is a sphere, it is not a perfect sphere. Because of the force caused when Earth rotates, the North and South Poles are slightly flat. Earth's rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round.

Is the cue ball heavier than the rest?

Generally, with older balls, the cue ball (CB) will be slightly smaller and lighter than the object balls (OBs) because it takes more abuse.

Is the Earth top heavy?

The tilt in Earth's axis is strongly influenced by the way mass is distributed over the planet. Large amounts of land mass and ice sheets in the Northern Hemisphere make Earth top-heavy. An analogy for obliquity is imagining what would happen if you were to spin a ball with a piece of bubble gum stuck near the top.

Is the Earth wobbling more?

Earth is accelerating

Since 1960s scientists have observed three epochs of ups and downs with gaps of about 20 years between them. However, the trend is for increased speed. “In each of the epochs it rotates quicker and quicker,” said Zotov.

Does the Earth spin smoothly?

It spins (rotates) at a speed of about 1,000 miles (1600 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.

What ball do most pro bowlers use?

Most pro bowlers use 16-pound balls, although more than you think use 15-pounders. Another method is to add one or two pounds to the weight of the house ball you normally use. A heavier ball drilled specifically to your hand will seem to weigh about the same as a house ball two pounds lighter.

Why do bowlers have 3 balls?

Bowlers don't just carry around an extra ball for the exercise. The majority of serious bowlers will roll their first shot with some spin. The spare ball, then, is used for a more precise second throw that does not hook away from any pins that are still left in the alley.

Is the Earth Dash like a ball?

The Earth is an irregularly shaped ellipsoid.

While the Earth appears to be round when viewed from the vantage point of space, it is actually closer to an ellipsoid.

How fast does the Earth spin?

The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. Thus, the surface of the earth at the equator moves at a speed of 460 meters per second--or roughly 1,000 miles per hour.

Can you touch a pool ball?

6.6 Touched Ball

It is a foul to touch, move or change the path of any object ball except by the normal ball-to-ball contacts during shots. It is a foul to touch, move or change the path of the cue ball except when it is in hand or by the normal tip-to-ball forward stroke contact of a shot.

Do you sink balls in pool?

The object of the game is to sink all seven of your balls into the different pockets on the pool table before the opposing player. You will be solids or stripes, and your opponent will have the other set of balls. For example, if you are solids, your opponent will be stripes or vice versa.

When was the last Earth wobble?

Around the year 2000, Earth's spin axis took an abrupt turn toward the east and is now drifting almost twice as fast as before, at a rate of almost 7 inches (17 centimeters) a year.

Does the Earth jiggle?

Although a desktop globe always spins smoothly around the axis running through its north and south poles, a real planet wobbles. Earth's spin axis drifts slowly around the poles; the farthest away it has wobbled since observations began is 37 feet (12 meters).

Why don't we feel the Earth wobble?

Since the Earth rotates at a near-constant speed (that is, it doesn't speed up or slow down in any way noticeable to us), we simply spin with it and don't feel a thing.

How old is Earth?

Today, we know from radiometric dating that Earth is about 4.5 billion years old. Had naturalists in the 1700s and 1800s known Earth's true age, early ideas about evolution might have been taken more seriously.

Is Earth or Sun heavier?

The sun is over 300,000 times heavier than the earth! Although we cannot actually weigh the Sun with a scale, we can compute its weight by studying the way it affects other objects, like the Earth. We do know that it contains virtually all the mass in our solar system!

Is Earth extremely thick?

It is between 5 and 80km thick. There are two types of crust, oceanic crust (found beneath the oceans) and continental crust. The oceanic crust is only 5-10km thick and made up mostly of basalt. The continental crust can be much thicker, up to 80km, and is made of less dense rocks such as silicate.

What cue ball do pros use?

The Aramith Pro Cup Cue Ball features: Official standard size 2 1/4" Made out of the most advanced Aramith Pro-Cup phenolic resin. Used worldwide in virtually all official tournaments.

What weight cue do pros use?

While professional billiards players tend to use pool sticks that weigh about 19 ounces, it is a better idea for beginners to use pool sticks that are a bit lighter (around 15 ounces) while they are still learning how to pocket those tough shots with ease.

Should I break cue heavy or light?

In general, a lighter cue will allow more control over finesse shots, and a heavier cue will allow more cue ball (CB) speed with less apparent stroke effort. A heavier cue might also be easier for some people to keep on line during the stroke, but this is a very individual thing.