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Boyle's law for an ideal gas using kinetic theory is;Halving the volume doubles the number of collision per unit time hence the state of change of momentum will also double.
Origin of the solar system as explained by the passing star theory is;A star with a greater gravitational pull than the sun passed by the sun. It drew off a stream of gaseous material from the sun.The material split, cooled and condenses to form planets set in orbit around the sun.Some smaller materials formed the moon and other heavenly bodies.
Formation of Fold Mountains using the contraction theory;During the formation of the surface rocks cooled and contracted faster than those of the interiorSince the interior was cooling at a slower rate the surface rocks started wrinkling in order to fit on the cooling and contracting rocks of the interiorThese wrinkles became Fold Mountains
Principles of evolution theory are;Environmental mutationNatural selectionIsolationAdaptation
Weakness of the passing star theory are;It fails to explain the original of the sun and the passing starThere are minimal exchange of another star approaching the sun.Materials which were drawn from the sun would have scattered in space rather than condense to form planets.