Plants need water to live

The leaves of the bamboo expand itself with in 2 minutes after watering the plant

The science behind self learning

Antioxidants

Antioxidants are substances that may protect our cells against the effects of free radicals. Free radicals are molecules produced when our body breaks down food, or by environmental exposures like tobacco smoke and radiation. Free radicals can damage cells, and may play a role in heart disease, cancer and other diseases.

Oxidation reactions can produce free radicals, which start chain reactions that damage cells. Antioxidants terminate these chain reactions by removing free radical intermediates, and inhibit other oxidation reactions by being oxidized themselves.

Maida Vs Wheat

Maida is made from wheat. When you grind wheat grains in a mill you obtain wheat flour and when the wheat flour is pressed through a very fine sieve you obtain Maida. Maida is refined wheat flour. Wheat flour has the goodness of bran and fiber and therefore healthy. Maida is very refined wheat flour with all the bran removed and is pure carb.

Why does a ship made of iron float while a piece of iron of same mass sink in water?

It’s because an iron ship is not completely solid. It has full of air filled in it. So the average density of the ship as a whole is less than the density of water. Therefore immersed portion of the ship displaces water equal to its weight. So the ship floats whereas a sheet of iron is compact and there are no air spaces inside it. Iron is denser than that of water. The weight of the sheet is greater than the weight of the water displaced by the sheet. So it sinks.

What comes out of a black hole?

In the below figure, All the other parts are just changed its place not in size. how the hole is come?

Which pole is colder, the North or the South?

Both Polar Regions of the earth are cold, primarily because they receive far less solar radiation than the tropics and mid-latitudes do. At either pole the sun never rises more than 23.5 degrees above the horizon and both locations experience six months of continuous darkness. Moreover, most of the sunlight that does shine on the Polar Regions is reflected by the bright white surface.

The South Pole the average temperature is about 56 degrees below zero degrees Fahrenheit (−49 degrees Celsius). At the North Pole the average temperature is a relatively balmy 20 degrees below zero (−29 degrees Celsius).

Why is the Ocean Salty?

All water, even rain water, contains dissolved chemicals which scientists call "salts." But not all water tastes salty. Salt doesn't evaporate when water evaporates. The rain flows back down to the sea, adding a little bit of salt to it constantly. Over millions of years, this makes the sea salty.

Everyone should eat more vegetables

Dear friends our Mom always said to eat more vegetables. But we never think why she is saying about this daily?  Today I am going to express my views about the Health benefits of vegetables. Vegetables and fruits are high in fiber. The main function of fiber is to keep the digestive system healthy and functioning properly.  Vegetables like fruits are low in fat. Contain good amounts of vitamins and minerals.

Breathing Fish Vs Human

While we observe fishes in an aquarium, the timing of the openings and closings of the mouth and gill slits are co-ordinated. 

Fire Water Balloon - Cool Science Experiment

How do people breathe in and out?

          We usually don’t have to think much about our breathing because our brain controls it automatically. When you have a lot of carbon dioxide the waste gas produced by body processes in our blood, our brain gets the message and tells our lungs to exhale and get rid of it. This action then causes us to inhale, drawing in air that eventually delivers oxygen to every cell in our body. This carefully regulated exhaling and inhaling takes place about 10 to 14 times each minute when we are breathing calmly.

What is AIDS?

AIDS stands for: Acquired Immune Deficiency Syndrome

AIDS is a medical condition. A person is diagnosed with AIDS when their immune system is too weak to fight off infections.Since AIDS was first identified in the early 1980s, an unprecedented number of people have been affected by the global AIDS epidemic. Today, there are an estimated 33.3 million people living with HIV and AIDS worldwide.

Why Is the Sky Blue?

Why Is the Sky Blue?

 The sun emits light that travels through space toward Earth because space is a vacuum. The light remains largely undisturbed until it nears the Earth, whose atmosphere is made up of a mixture of gas molecules (mainly oxygen and nitrogen) and other materials. The closer you get to the Earth, the thicker the atmosphere. Light from the sun appears white but is in fact a combination of colors, and the range of these colors that are visible to the human eye from red to violet, by way of orange, yellow, green, blue and indigo is shown when light is passed through a prism These different colors have different wavelengths and energies, with violet having the shortest wavelength and highest energy and red having the longest wavelength and lowest energy.

What is spectrum?

The electromagnetic spectrum is a vast band of energy frequencies extending from radio waves to gamma waves. When you listen to the radio, watch TV, or cook dinner in a microwave oven, you are using electromagnetic waves. It is represented by frequency (in Hertz) or Wave length (in meter). 

Largest and smallest cells in human body.

Cells are measure in Microns. The human ovum is typically around between 120 to 150 micro meters which is the largest cell in the human body. it is visible to the human eye under a microscope.

How compact fluorescent lamps (CFL) Works?

When an atom absorbs energy from any external source, it goes to excited state. When it come back to ground state it emits that energy in Ultra violet, Infrared or visible region. Normally tungsten filament emits light in uv region when it jumps from excited state to ground state. These photons hit the phosphor coating the inside of the fluorescent tube, and this phosphor creates visible light.

How do scientists measure the strength of an earthquake?

A few different scales measure how strong an earthquake is. The best known is the Richter scale, created in 1935, which uses an instrument called a seismograph to measure the size of the ground waves created by an earthquake.An earthquake’s size, or magnitude, generally ranges from 1 to 8 on the Richter scale (though the waves of some giant quakes have registered well beyond the top of the scale). The shock waves of an earthquake that registers a magnitude of 1 can only be detected with special instruments, while those with a magnitude of 8 cause massive damage.

Urea in our body

Urea is a waste product. It is found in our body and extracted from urine. However, it also plays a very important role in that it helps set up the countercurrent system in the nephrons. Urea is reabsorbed in the inner medullary collecting ducts of the nephrons, thus raising the osmolality in the medullary interstitial surrounding the thin ascending limb of the Loop of Henley. The greater the osmolarity of the medullary interstitium surrounding the thin ascending Loop of Henle, the more water will be reabsorbed out of the renal tubule back into the interstitium (and thus back into the body). 

Why are frozen foods less affected by bacteria?

Freezing in general causes cells to slow down everything. Cells work more slowly at lower temperatures. If you cool down to near-freezing, cells reproduce very slowly. At very lower temperatures the water in the cells will freeze. This can kill the cells or it slows down the oxygenation which degenerates food.

Why do we see light followed by sound in thunder storm?

When thunder and lightning occur in a thunderstorm, we first see the light followed by the sound. Normally sound travels in waves and we can hear the sound when these waves hit our ears. Similarly light also travels as waves.

Bones in our body

Babies are born with about 330 bones, but many of them join together during the process of growing up, creating fewer, larger bones. Adults have 206 bones. Some people end up with a few extra bones, though, in the arches of their feet or as an extra set of ribs in their rib cage.

What is a clone?

To understand cloning, we must first understand a few things about cells.  All living things, from the simplest to the most complex, are made up of cells. Cells are specialized to perform a variety of functions. There are muscle cells, skin cells, nerve cells, and so on.

What did dinosaurs eat?

Dinosaurs came in many different shapes and sizes, and they also had a variety of diets. Most dinosaurs ate plants, with the very large dinosaurs eating leaves from the tops of trees and smaller ones eating plants and bushes growing close to the ground.

Why do we have leap years?

Calendars are fairly fixed things. Each year has the same number of months and days, and the days follow a seven-day rotation going from Sunday to Saturday. But the movements of Earth do not conform exactly to the time designations humans have imposed.