Science and G.K. Facts

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

  There is a force that attracts all things which are living and non-living in the Universe, which is Gravitational force. The force that helps the body to float in a liquid is the Buyont force. The force which helps us to stop anything which helps us to write on  board, walk on a road,  which is Frictional force.

 There are around 206 bones in the human body and approx 300 bones in the newborn child.

  Sound need's a medium to travel. If there is no medium we can not hear the sound. That's why sound can't travel in space. In space, there is no medium.

Our atmosphere is made up of roughly 78 per cent nitrogen and 21 per cent oxygen, with various other gases present in small amounts. The vast majority of living organisms on Earth need oxygen to survive, converting it into carbon dioxide as they breathe. Thankfully, plants continually replenish our planet’s oxygen levels through photosynthesis. During this process, carbon dioxide and water are converted into energy, releasing oxygen as a by-product. Covering 5.5 million square kilometres (2.1 million square miles), the Amazon rainforest cycles a significant proportion of the Earth’s oxygen, absorbing large quantities of carbon dioxide at the same time.

  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.

  If you're an avid rainbow gazer and want to get your fill of the beautiful phenomenon, look no further than the state of Hawaii. A study published by the  American Meteorological Society  in 2021 noted that the area's "mountains produce sharp gradients in clouds and rainfall, which are key to abundant rainbow sightings." Air pollution, pollen, and a large amount of cresting waves also help to put Hawaii at the top of the list when it comes to rainbow quantity and quality.

  Europe has been experiencing serious dry spells and extreme heat since 2015, which has caused major droughts. Research done led by the University of Cambridge (and published on the  National Oceanic and Atmospheric Administration  website) looked at isotopes in the rings of old European Oak trees in Central Europe which formed over thousands of years to try to pin down the cause. They discovered that  the dry spells  are a "result of human-caused climate change and associated shifts in the jet stream," according to EurekAlert!

  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.