Printable worksheet ยท 4 of 4
A light-year measures distance - Paper 4
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
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Simplified stationary model: an object is 80 light-years away and its light arrives during year 2030. One light-year is the distance light travels in vacuum in one year. Ignore expansion, relative motion and within-year timing; treat dates approximately.
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