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The difference between winter and summer temperatures can cause bridges to contract or expand as much as 20 cm, which is called thermal expansion. To solve...
Let’s make a pinwheel! It is a witty little toy if you give it a go in windy weather, too!
Noises surrounding us.
Entropy is present in all processes of life, from physics to chemistry, from architecture to biology.
As seasons change, we see different constellations in the night sky. The North Star is easy to identify in a picture taken with long exposure time, as it...
Let's find out how to use the 3D graph tool.
Have you ever heard about boomwhackers? Believe it or not, these are real musical instruments.
What do you think happens if we inhale Helium?
Masada, a fortress built on a gigantic isolated plateau, is a symbol of Jewish patriotism.
Much more food is produced on Earth than is required to feed the population. While most people in developed countries have access to enough food, people in...
Among the most significant research carried out in the early 20th century focused on the structure of the atom.
Let’s find out how to use the Test Editor tool.
How can this pendulum accurately measure time in seconds?
We can produce carbon dioxide gas using sodium hydrogen carbonate and acetic acid. The carbon dioxide puts out the flame.
The energy released by the burning walnut is used to heat water.
The largest rivers on Earth are found in the tropical zone.
A brightly coloured and extremely loud parrot whose screams can be as loud as 110 dB. In humans, long-term exposure to sounds of such intensity can cause...