What Would You Say Is an X-ray?
An example of electromagnetic radiation is X-rays. Compared to light, they have a much shorter wavelength. X-rays can pass through human bodies, but light cannot. They...
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Why Is Roopkund Called the Lake of Skeletons?
Roopkund the Himalayan lake, locally known as “Mystery Lake”, is a glacial lake in Uttarakhand, India. It is also called “Skeleton Lake”. But why is Roopkund called the...
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Why Do We Need Calcium in Everyday Life?
Calcium is a silvery white metal. It has the chemical symbol Ca. It is one of the commonest metals in the Earth’s crust. It reacts easily with many other elements, and...
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How Many Bones Do Sharks Have?
The answer is zero. Did you know they have a skeleton made entirely of cartilage rather than bone as in other fishes. A shark’s skeleton is made of cartilage and...
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How Do Horses Sleep Standing Up?
How Do Horses Sleep Standing Up? Horses have a unique system of interlocking ligaments and bones in their legs, which serve as a sling to suspend their body weight...
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