Test # 4
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500 questions in 50 tests. Each test contains 10 questions.
Idiom of the Day
weave in and out (of something)
to move or drive or walk in and out of something such as traffic
The man was driving very fast and was weaving in and out of the traffic.
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Crazy Facts About The Universe
All 6 Billion People On Earth Can Fit Inside An Orange
If I can just be allowed to explain, 99.9% of an atom is just empty space. Well heck, everyone knows that!, I hear you cry. As is the case with many facts we tend only to recognise this point in theory, because we cannot really envisage what an atom is like to look at. It is very small.
To put this point into perspective, if you removed all the empty space from the atoms that make up all the humans on the planet then you could fit all 6 billion of us inside a single orange. Come to think of it some unkind people have called me a waste of space and now its provable!
We can find atoms everywhere, since they are among the fundamental building blocks of the universe. The Sun contains 99.86% of all the mass in the Solar System. The mass of the Sun is approximately 330,000 times greater than that of Earth. It is almost three quarters Hydrogen, whilst most of the remaining mass is Helium.