Consider an asteroid that orbits the Sun once every 5 years. Does this object ever cross the Earth's orbital path?
1.Yes, it must cross twice every five earth years.
2.No, it can never cross Earths orbital path.
3.Yes, it must cross once every Earth year.
4.It is impossible to tell.
Question 2
Mercury, the closest planet to the Sun, has an orbital period that is
1.greater than that of all of the other planets.
2.less than that of all of the other planets.
3.greater than that of some of the planets and less than that of others.
4.equal to one Earth year.
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