Table of Contents
Do rain drops hit each other?
Small raindrops, less than 1 millimeter in size (less than one-sixteenth of an inch), retain a roughly rounded shape because of surface tension, but drops can collide into each other as they are falling and form bigger raindrops.
Why does rain fall in drops and not pour all together?
Rain is restricted to drops of water that fall from a cloud. Larger drops do not survive as the process of surface tension which holds the drop together is exceeded by the frictional drag of air and therefore larger drops break apart into smaller ones.
Why does rain fall as drops instead of cubes or cylinder?
Rain always fall in drops and not as a continuous stream. This is mainly due to the surface tension of water caused due to the tendency of water molecules to stick together. Therefore, larger drops split into smaller ones.
Why do puddles ripple?
Large waves in the center move more slowly than small waves at the perimeter. Shallow puddles enable ripples, because they are much thinner than they are wide. The balance between the surface force – between the water puddle and the air above it – and the gravitational force tips in favor of surface force.
Why do raindrops not hurt?
The reason is called -Terminal velocity. This is a status of an object that stops to accelerate in free falling due to air friction and keeps its speed at the rate that other opposing forces allow.
Why does it rain all at once?
As the droplets collide, or more humidity condenses onto the surface of the droplets, they become too large to be supported by air currents, and fall as rain. For the rain to all fall at once, something would have to support it until all the water had merged into one mass. The wind doesn’t supply that much lift.
What is the driest place on Earth?
the Atacama Desert
It is important to note that there does exist an even more arid desert on the planet: the dry valleys of Antarctica. Which is why it’s more precise to say that the Atacama Desert is the driest non-polar place in the world.
What happened to the drop of water when you touched it with toothpick?
Water molecules have a strong attraction for each other. But when you dip the toothpick into dish soap, the water water is repelled, not attracted, so the water bubble bursts as it tries to move away.
How do the rain drops fall?
Gravity pulls everything downward. As an object falls, it experiences a frictional drag that counters the downward force of gravity. You will not find a raindrop any bigger than about one-quarter of an inch in diameter; larger than that, the drop will break apart into smaller drops because of air resistance.
Why rain drops are spherical in shape?
Raindrops start to form in a roughly spherical structure due to the surface tension of water. This surface tension is the “skin” of a body of water that makes the molecules stick together. On smaller raindrops, the surface tension is stronger than in larger drops. The reason is the flow of air around the drop.