Physics – Chapter 21 Venus and Mars


Part 1 : A sidereal day on Venus is ______________________ Earth days, and a year on Venus is _______________________ Earth days.Why do we need radio waves to study the surface of Venus? __________________________________________________________________Name two contrasts and two similarities between Earth and Venus.Do you think one would be able to survive on the surface of Venus with a spacesuit? Why or why not? __________________________________________________________________The high concentration of _________ in Venus’s atmosphere contributes to the _______ effect.What evidence do we have that neither Mars nor Venus are dominated by tectonic activity the way the Earth is? __________________________________________________________________What is the cause of Mars’s reddish surface? __________________________________________________________________Which hemisphere of Mars (northern or southern) is probably older? How do we know this? __________________________________________________________________What are the three periods of Mar’s planetary history?a.b.c.Give two examples that demonstrate evidence for flowing surface water at some point in Mars’s history.________________________________________________________________________________________________________________________Observations of Mars have found traces of a magnetic field frozen into the crust. What does this tell us about Mars’s evolution as a planet? __________________________________________________________________Go to the current events and read the recent article “Nuclear-powered rocket could get astronauts to Mars faster”. Write 5 – 10 sentence summary about it.…13.Go to the current events and read the recent article “Venus: The Basics”. Write 5 – 10 sentence summary about it. 2: Click the following link to watch the video – The Story of Very Large Array:1. Compare and contact Radio telescopes with Optical telescopes and state why we need Radio telescopes.2. What regions or bands of electromagnetic spectrum do the objects of universe, emit light?3. Each Very Large Array (VLA) telescope is of ____ ft in height and ______ ft in diameter. When deployed, it can spread up to a distance of _____ miles.4. What is the reason for requiring combined telescope spanning miles wide?5. Certain Radio Waves are visible to human eyes: True or False? _______6. _______________ discovered Radio wave emission of objects in space in year ______7. List three prominent discoveries of VLA since 19808. A cell phone not in service, can emit radio emission ________________ times stronger than the most powerful radio source in deep space.9. What part of the telescope are the band-receiver located in a Radio telescope? ______10. What is the main ingredient of future stars? _________11. VLA was rebuilt by replacing __________. How long did the replacement take? ________12. Which country contributed to the supercomputer upgrade of VLA? __________13. Describe how telescope’s capabilities were enhanced by 2000 fold.14. What is the weight of each telescope? ________ What is the maximum speed at which each telescope is transported to its location? _______15. What are two observations aspects that were enhanced with configuration changes?16. Describe how best image quality is obtained?17. Compare telescope configurations A and D in terms of configuration proximity and image detail or resolution.18. How many miles did light from Hanize 2-10 travel to reach earth? ______________19. What are the three sources and types of data contributed to spectacular discovery mentioned in the video? What is this discovery?20. How many antennas in total, are part of Very Large Array? __________21. What surprised you the most about this video?22. How does this video relate to what we are learning in our class?

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