MYP Physics · 16 · data analysis
Galaxy spectrum shift
Space physics · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- demanding
- Marks
- 6
- Topics
- 1
- Answer
- Complete
Question6 marks
A hydrogen line normally at 656.3 nm is observed at 660.2 nm in a distant galaxy. Calculate fractional redshift z = (observed - rest)/rest and interpret its sign.
Task interpretation
What a complete response should do
Identify the useful evidence, process it with units, and make only the conclusion the data supports.
Split the problem into linked stages and state why each relationship applies.
- Response type
- data analysis
- Allocation
- 6 marks
- Demand
- demanding
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