Question: How Fast Does Rain Fall?

What altitude does rain fall from?

No, rain doesn’t fall from the bottom of the cloud but from the top.

And that varies with the type of cloud.

A cumulonimbus can reach the top of the troposphere, some 15 kilometer above the surface of the earth..

Which fall faster big rain drops or small raindrops?

When the rain drops of different size fall under gravity, they ultimately move with their terminal velocities due to viscous drag of air. As terminal velocity of a drop varies as the square of its radius. Therefore,a bigger drop will have greater terminal velocity and hence, fall faster than a small rain drop.

How fast does a human fall?

The speed achieved by a human body in free fall is conditioned of two factors, body weight and body orientation. In a stable, belly to earth position, terminal velocity of the human body is about 200 km/h (about 120 mph).

What if rain fell all at once?

Originally Answered: What if rain came down all at once and not in tiny raindrops ? Then we would all die. Not from the rain but because of the lack of oxygen. Moisture in the air can only condense into droplets of water when cooled down by the adiabatic effect of a lesser pressure.

Is it possible for it to rain everywhere at once?

Because it’s not even possible for there to be simultaneously no rain in Scotland. Follow-up answer: No. On a related note, it is impossible for it to be windy simultaneously everywhere on Earth (or any other planet for that matter). … As a corollary, it impossible for everywhere on Earth to be a different temperature.

Why do raindrops get bigger as they fall?

The top remains spherical, even on bigger falling raindrops, because surface tension—those water molecules clinging to each other—is greater than the pressure of airflow above. The bigger the raindrop, the faster it falls, and the more it is affected by air pushing against its bottom.

How big is a raindrop when it leaves a cloud?

Raindrops can come in many sizes, but nothing comes in “all” sizes. Basically, the size range for falling-out-of-a-cloud raindrops is between 5 millimeters (mm) and 1/2 mm. Five millimeters is about a quarter of an inch; 1/2 mm, or 0.5 millimeter, is 1/25th of an inch.

What is the largest raindrop ever recorded?

The largest raindrops ever directly recorded measure a minimum of 8.6 mm (0.338 in) across. They have been detected on two occasions; September 1995 (Brazil) and July 1999 (Marshall Islands).

Where did the world’s biggest raindrop fall?

Flying above the volcanic coast of Hawaii, buffeted by a tropical storm, a team of cloud physicists armed with laser and computer has recorded what may be the largest raindrop ever measured. It was 8 millimeters across, almost the size of a dime.

Which falls faster big raindrop or small raindrops?

The raindrop moves with terminal velocity due to the viscous drag of the air. The terminal velocity of the drop varies as the square of its radius. Hence, a bigger drop has a higher terminal velocity than a smaller one.

How many raindrops fall in an average thunderstorm?

Once square mile is 4014489600 square inches, so we end up with 4014489600 cubic inches of rain, or 17378700 gallons (which is a lot!). There are 90,921 drops of water in one gallon, so multiplying all together… Roughly 1,580,088,782,700 drops of water will fall. Or about 1 1/2 trillion drops.

How many floors can you survive a fall?

The median lethal distance for falls is four stories or 48 feet, according to the reference book Trauma Anesthesia. This means that 50% of patients who fall four stories will die. The chance of death increases to 90% when the fall is seven stories, the book said.

What is the max speed you can fall?

Near the surface of the Earth, an object in free fall in a vacuum will accelerate at approximately 9.8 m/s2, independent of its mass. With air resistance acting on an object that has been dropped, the object will eventually reach a terminal velocity, which is around 53 m/s (190 km/h or 118 mph) for a human skydiver.

How far can you fall in 6 seconds?

So in 6 seconds, a person will fall 5 x 36 or 180 meters. If a stone is dropped from rest, what is its speed after 2 seconds if it takes g=10 m/s square?

How fast do raindrops fall in still air?

about 10 meters per secondIn still air, the terminal speed of a raindrop is an increasing function of the size of the drop, reaching a maximum of about 10 meters per second (20 knots) for the largest drops. To reach the ground from, say, 4000 meters up, such a raindrop will take at least 400 seconds, or about seven minutes.

Do large raindrops fall faster?

Because the resistance of the air moving through it is proportional to the surface area of the moving object, large raindrops fall faster than small raindrops.

What happens if a cloud fell?

If clouds descend down on earth in as-is condition then nothing will happen except everyone will feel very dense fog. Vehicles can swiftly move from it. People can easily walk through it. But visibility will be nearly 0 to 10 meters may be.

What are falling raindrops shaped like?

As the raindrop falls, it loses that rounded shape. The raindrop becomes more like the top half of a hamburger bun. Flattened on the bottom and with a curved dome top, raindrops are anything but the classic tear shape. The reason is due to their speed falling through the atmosphere.