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Capacitors store electrical energy in the form of electric charge.
Uranus is the 7th planet from the Sun, a gas giant.
The Earth's continents have been in constant motion during the history of the planet.
In alkaline batteries electric current is generated by electrochemical reactions
DC motors consist of a permanent magnet and a coil within the magnet, with electric current flowing in it.
During freezing hydrogen bonds are formed between water molecules resulting in a crystal structure.
High speed generates a lift on airplane wings due to their asymmetrical profile.
Submarines submerge and surface by changing the average density of the hull.
The length of the metal frameworks of bridges change when the temperature changes.
During its orbit around the Earth, the visibility of the Moon's illuminated part constantly changes.
Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.
Possible traces of water and life are sought on Mars.
A type of rotary engine of high efficiency
Neptune is the outermost planet of the Solar System, the smallest of the giant planets
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
Mercury is innermost and smallest planet of the Solar System.
Venus is the 2nd planet from the Sun, the brightest object on the night sky (after the Moon).
Hydrogen atoms within hydrogen molecules are held together by a covalent bond.
Cold and warm fronts are formed where bodies of cold and warm air meet.
The Space Shuttle was a manned, reusable spacecraft operated by NASA.