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Grade 12 · Astronomy & space

Grade 12 Astronomy & space practice

20 questions on space science, astronomical light. The answer key is a separate download.

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  1. A probe is 41600000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  2. A probe is 36500000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  3. A probe is 15700000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  4. A probe is 42000000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  5. A probe is 21800000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  6. A model blackbody has temperature 8800 K. Use Wien constant 2.898×10⁶ nm K to find its wavelength-spectrum peak. Round the final result to 4 decimal places if needed. Answer in nm.

  7. A probe is 27600000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  8. A probe is 21900000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  9. A probe is 17900000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  10. A model blackbody has temperature 5300 K. Use Wien constant 2.898×10⁶ nm K to find its wavelength-spectrum peak. Round the final result to 4 decimal places if needed. Answer in nm.

  11. A probe is 13400000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  12. A probe is 18800000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  13. A probe is 48200000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  14. A probe is 4900000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  15. A model blackbody has temperature 6900 K. Use Wien constant 2.898×10⁶ nm K to find its wavelength-spectrum peak. Round the final result to 4 decimal places if needed. Answer in nm.

  16. A model blackbody has temperature 11300 K. Use Wien constant 2.898×10⁶ nm K to find its wavelength-spectrum peak. Round the final result to 4 decimal places if needed. Answer in nm.

  17. A model blackbody has temperature 9200 K. Use Wien constant 2.898×10⁶ nm K to find its wavelength-spectrum peak. Round the final result to 4 decimal places if needed. Answer in nm.

  18. A probe is 17600000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  19. A probe is 25200000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

  20. A probe is 13000000 km away. Use signal speed 300000 km/s and find its one-way communication delay. Round the final result to 4 decimal places if needed. Answer in s.

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