Mini-Quiz: General Relativity Theory of Gravitation

1. What is spacetime?

   The combination of the three dimensions of space with timeCorrect. You know relativity and gravitational concepts. The time is takes an object to travel in spaceGood try, but not right. Select another answer. GravitationSorry, not correct. Try another button.

2. Why would the planet Mercury have an unusual orbit?

   Mercury is in the realm of spacetime, thus causing relativity from the SunSorry, not correct. Try another button. Mercury is a shiny liquid planet, thus affecting its motionOops! Wrong answer. Re-read the question and try again. It is so close to the Sun that the high gravitational field affects its motion differently than planets further away from the SunThat is Correct. You are almost like Einstein.

3. What is one difficulty with the General Relativity explanation?

   Gravitation doesn't fit with other fundamental forcesCorrect. You know relativity and gravitational concepts. No one, except Einstein, can understand itGood try, but not right. Select another answer. Space is empty, so it cannot be curvedOops! Wrong answer. Re-read the question and try again.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.