Alkali metals

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September 09, 2021

Some metals are very reactive that can be reactive with air. These metals are known as alkali metals.

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The Smallest guitar

February 09, 2021

The smallest guitar in the world is of the size of a red blood cell The world's smallest guitar is of the size of a red blood cell. It was developed by scientists from Cornell University.US The nano guitar has six strings each of 50 nano meters wide.When plucked by an atomic force microscope ,the strings would resonate.But it will at be inaudible frequencies. The first of its kind was made in Cornell University in 1997. The nano guitar was made from crystalline silicon.It is about 10 micrometers long .It can be viewed with the help of an electron microscope .

Glaciers and ice sheets hold about 69 percent of the world's freshwater.

April 13, 2021

Glaciers are a big item when we talk about the world's water supply. Almost 10 percent of the world's land mass is currently covered with glaciers, mostly in places like Greenland and Antarctica. You can think of a glacier as a frozen river, and like rivers, they "flow" downhill, erode the landscape, and move water along in the Earth's water cycle. During the maximum point of the last ice age, glaciers covered about 32 percent of the total land area. Starting around the early 14th century, and lasting to the mid-19th century, the world experienced a “Little Ice Age,” when temperatures were consistently cool enough for glaciers to advance in many areas of the world. In the United States, glaciers cover over 90,000 square kilometers (35,000 square miles). Most of those glaciers are located in Alaska, which holds 87,000 square kilometers (34,000 square miles) of glacial ice. If all land ice melted, sea level would rise approximately 70 meters (230 feet) worldwide....

Oxygen in ocean

February 07, 2021

How much oxygen comes from the ocean? Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize. One particular species, Prochlorococcus, is the smallest photosynthetic organism on Earth. But this little bacteria produces up to 20% of the oxygen in our entire biosphere . That’s a higher percentage than all of the tropical rainforests on land combined. It’s important to remember that although the ocean produces at least 50% of the oxygen on Earth, roughly the same amount is consumed by marine life. Like animals on land, marine animals use oxygen to breathe, and both plants and animals use oxygen for cellular respiration. Oxygen is also consumed when dead plants and animals decay in the ocean. Calculating the exact percentage of oxygen produced in the ocean is difficult because the amounts are con...

Effcts Of "Smart phone"

February 06, 2021

Effects of "Smart Phone" In the smartphone era, people often expect you to be digitally connected 24/7 and to get back to them instantaneously, too — especially with email and social media read receipts.However, this is not realistic, and can cause problems when one party has the 24/7 availability mindset and the other does not. “Social media platforms are designed to encourage more digital interaction time". “Ultimately, though, we alone determine whether or not we’ll be ‘hooked’ into this mindset.” Increased smartphone use may also lead to depression. For instance, according to researchers who studied college students, the more they used Facebook, the more their well-being decreased . “ I recommend putting smartphones away as much as possible, and doing so may be quite beneficial towards your mental health,”

Carbon Cycle

February 08, 2021

What is the carbon cycle? Carbon is the foundation of all life on Earth, required to form complex molecules like proteins and DNA. This element is also found in our atmosphere in the form of carbon dioxide (CO2). Carbon helps to regulate the Earth’s temperature, makes all life possible, is a key ingredient in the food that sustains us, and provides a major source of the energy to fuel our global economy. The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change. Where the carbon is located — in the atmosphere or on Earth — is constantly in flux. On Earth, most carbon is stored in rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms. These are the reservoirs, or sinks, through which carbon cycles. Carbon is released back into the atmosp...

Chenab bridge

February 09, 2021

The Chenab Bridge is a 1315 m long, steel arch railway bridge under construction in Jammu and Kashmir, India. The bridge is a part of the Jammu-Udhampur-Srinagar-Baramulla Rail Line (JUSBRL) project being undertaken by the Indian Railways. The Chenab bridge will have a structural height of 359 m from the riverbed level, the highest in the world.The terrain of this railway line is mountainous and will pass through tunnels and bridges constructed in difficult Himalayan geology. The crossing of the Chenab river is one of the most challenging parts of the project. The bridge comprises of a 530 m long approach bridge, and a 785 m long arch bridge. The main arch spans 467 m, making it one of the longest arches in the world and the longest arch for rail traffic. The deck will be 13.5 m wide and will include two tracks upon completion.

How glaciers hold water

August 18, 2021

Glaciers and ice sheets hold about 69 percent of the world's freshwater. Glaciers are a big item when we talk about the world's water supply. Almost 10 percent of the world's land mass is currently covered with glaciers, mostly in places like Greenland and Antarctica. You can think of a glacier as a frozen river, and like rivers, they "flow" downhill, erode the landscape, and move water along in the Earth's water cycle.

The fastest gust of wind ever recorded on Earth was 253 miles per hour.

April 13, 2021

Hang on to your hats because this isn't your average wind storm. In 1996, a tropical cyclone named Olivia hit off the coast of Barrow Island, Australia with such a force that it broke an incredible record. According to The Weather Channel , "Olivia's eyewall produced five extreme three-second wind gusts, the peak of which was a 253 mph gust," which blew past the previous wind record of 231 mph set in Mount Washington, New Hampshire back in 1934.

Venus