Kids Questions & Answers

Kids Questions & Answers

When were the first land animals appeared on the earth?

When were the first land animals appeared on the earth?

Animals first appeared on earth about 430 million years ago, but did not begin to resemble the ones we know today until 360 million years later. Sharks however were already abundant about 340 million years ago. It seems that the first land animals were insects such as scorpions and millipedes. But they were greatly different from today’s insects. Next to …

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How can we foretell Earthquake?

Nepal Earthquake Images

China has suffered some terrible earthquakes, and it isn’t surprising that China’s scientists want to find ways of forecasting them. In 1975, they were successful. They cleared the city of Haicheng two hours before a devastating quake and saved the city’s population. Earthquake forecasting is, however, still inexact; the Chinese have failed to predict several earthquakes since 1975, but they …

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How is the height of different places on earth measured from the sea level?

How is the height of different places on earth measured from the sea level?

How is the height of different places on earth measured from the sea level? The height of different places on earth is measured with the help of the ‘altimeter’. The instrument used for measuring the height at a place is basically a barometer. At sea level, the height of the barometric liquid (mercury) is 76 cm. When we go to …

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Why do we celebrate Eid-Ul-Fitr?

Why do we celebrate Eid-Ul-Fitr?

Eid-Ul-Fitr, Eid al-Fitr, Id-ul-Fitr, or Id al-Fitr, often abbreviated to Eid, is a two-day Muslim holiday that marks the end of Ramadan, the Islamic holy month of fasting (sawm). Eid is an Arabic word meaning “festivity,” while Fiṭr means “original nature,” implying the restoration of one’s best human composition. The holiday celebrates the conclusion of the thirty days of dawn-to-sunset …

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What is the cause of the earth’s magnetic field?

What is the cause of the earth’s magnetic field?

Originally, it was thought that the centre of the earth has magnetized iron deposits, which caused it to act like a huge permanent bar magnet. However, the theory failed to explain how the magnetic field had sustained itself for long, because even if there was magnetized iron in the core earlier, the core of the earth is so hot that …

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What was the first life on the Earth?

What was the first life on the Earth?

Until quite recently it was thought that there were no abundant life forms on this planet until about 600 million years ago. When we remember that the Earth itself is at least 4500 million years old, it does seem to have taken a very long time before any animals or plants appeared. Then, geologically speaking, they must have developed very …

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