EXIT SLIP
How do scientists measure a light year?
BLM: Page 1 of 1
Name: ______________ Date: __________ Class: ___________
1. What is an astronomical unit?
2. What is a light year? Write the equation for a light year.
3. When referring to astronomical distances why is a light year the best choice as a
unit of measurement?
4. How many kilometres away is a star that is 3.2 light years from Earth?
Name: ______________ Date: __________ Class: ___________
1. What is an astronomical unit?
2. What is a light year? Write the equation for a light year.
3. When referring to astronomical distances why is a light year the best choice as a
unit of measurement?
4. How many kilometres away is a star that is 3.2 light years from Earth?
Link to Learning Strategy / Link to Article
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