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Cloze Activity Answers Fill in the blanks below. |
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| Sun dark Venus rarer Mercury |
eclipse transit between hours orbit |
3.39 years Earth larger ecliptic |
A transit is when a smaller body passes in front of a larger one (for example, when an object like Venus passes between the Earth and the Sun). During a transit, the object (Venus in this case) appears as a small, dark object crossing the larger object. A transit is just like a special type of solar eclipse, but the Sun does not go dark; only a tiny bit of the Sun is obscured.
The only planets that ever pass between the Earth and the Sun are Mercury and Venus (since they are the only planets closer to the Sun than the Earth is). Therefore, the only planets that can produce a transit are Mercury and Venus. Since Venus' orbit is much larger than Mercury's orbit, transits of Venus are even rarer than those of Mercury.
A transit of Venus occurs only when two things happen simultaneously:
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