Mini-Quiz: Law of Universal Gravitation

1. Did Isaac Newton discover gravity?

   Yes, he made the discovery after keen observationsSorry, not correct. Try another button. Most people think he invented gravity, because it didn't exist before himGood try, but not right. Select another answer. No, Newton elaborated on previous work of other scientistsCorrect. You have good knowledge of gravitational concepts.

2. Why would the orbit of Mars be affected by the Earth?

   Gravitation from the Earth can distort the orbit of Mars at certain positionsThat is Correct. You are doing great. Mars will sometimes rotate around the EarthOops! Wrong answer. Re-read the question and try again. The planets are too far apart to have any influenceSorry, not correct. Try another button.

3. Are light rays deflected by the Earth's gravitation?

   No, because light has no weightGood try, but not right. Select another answer. Yes, although the deflection would be extremely smallCorrect. You have good knowledge of gravitational concepts. It depends on the speed of the light raysOops! Wrong answer. Re-read the question and try again.

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