What causes the seasons? Earth science
This is why it's hotter in summer and colder in winter. The reason it is sometimes winter and sometimes summer is that the Earth spins on a slightly tilted axis. You can [...]
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08, 2017
What are magnets? Physics and electricity
A magnet holding a steel bar - what are magnets? What is magnetism? Magnetism is a force created by electricity, or more specifically by electrons. In any iron atom, there are 26 electrons. [...]
