Each question can be answered in 1 paragraph itself.
q18: List the 4 main observations of Galileo, made with a telescope about 400 years ago. For each of these explain what was observed and how it was interpreted. Which of these four observations do you consider to be were the strongest evidence against the Geocentric model?
q20: Correct the mistakes in this sentence by writing an improved version:
“Kepler formulated the laws of motion and realized that planets move slower when they are closer to the Sun. Distant planets take less time to orbit the Sun than planets close to the Sun
q21: Correct the sentence by writing an improved version of it:
“Newton discovered gravity, and found out that that the Sun attracts the planets with a larger force, than the force that planets exert on it.”
q23: The Moon is less massive than Earth, and orbits Earth. Does this mean that Earth pulls the Moon with a larger force? Explain your reasoning
q25: If Newton’s Theory of Gravity is so well-tested and confirmed by many observations, why did Einstein develop his theory of gravity (the General Relativity Theory)? Can we say that Newton’s theory of gravity is wrong? Explain your reasoning.
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