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Science – Hour _____ Date:__________ Name:_________________ The Terrestrial Planets Science Fusion Lesson Guide Packet Directions: Go to the following website. Follow the instructions on the slides to complete this handout. http://tinyurl.com/jndtfoq Slide 1 1. Click on each vocab word and write its definition. terrestrial planet: ___________________________________________________ ___________________________________________________ astronomical unit:___________________________________________________ ____________________________________________________ Slide 2 2. Earth to the sun is about ______ million miles. 3. What is significant about the length of one astronomical unit? ___________________________________________________________________ 4. Why do we measure in AUs rather than miles or kilometers when in the solar system? ___________________________________________________________________ ___________________________________________________________________ Slide 3 5. List the 4 terrestrial planets of the solar system, which are _______________ to the sun. _______________ _______________ ________________ ________________ 1 6. These planets have a ____________ composition similar to ________________. 7. True or False (circle) Mercury is smaller than Earth. 8. Mercury orbits the sun every _______ days. 9. What is special about Mercury’s temperature? ___________________________________________________________________ ___________________________________________________________________ 10. True or False (circle) Venus is cooler than Earth and takes 225 days to orbit the sun. 11. True or False (circle) Mars is smaller than Earth. 12. Compare the orbit of Mars to that of Earth. ___________________________________________________________________ Slide 4 13. How many moons does each inner planet have? Mercury - _____ Mars - _____ Venus - _____ Earth - ______ 14. What is a lunar day? _______________________________________________ 15. Why does the same side of the moon always face Earth? ___________________________________________________________________ ___________________________________________________________________ 16. Describe the size of Mars’ moons. ___________________________________________________________________ ___________________________________________________________________ Slide 5 17. Name the inner solar system planets from largest to smallest. _______________ _______________ ________________ ________________ 2 18. The inner solar system planets are denser than the gas giant planets. Why? ___________________________________________________________________ ___________________________________________________________________ 19. Why does Earth have a greater surface gravity than Venus? ___________________________________________________________________ Slide 6 20. Which is the hottest inner planet? _______________ The coolest? ___________ 21. Mercury is really hot in the day and really cold in the night. Why? ___________________________________________________________________ ___________________________________________________________________ 22. What are the 2 main elements in Earth’s atmosphere? ____________________ 23. What about Venus’s atmosphere makes Venus so hot? Why? ___________________________________________________________________ ___________________________________________________________________ Slide 7 24. True or False (circle) Time of rotation is how long it takes something to get all the way around the sun one time. 25. How is it possible for Venus to have a negative period of rotation? ___________________________________________________________________ 26. Which inner planet tilts the least on its axis? ___________________ Slide 8 27. True or False (circle) The inner planets have different speeds of rotation but the same speed of revolution. Slide 9 28. What is an astronomical unit? ________________________________________ 3 Slide 10 29. What properties combine to make Mars colder than Earth? ___________________________________________________________________ Slide 11 30. After studying the planets of the inner solar system, do you think the gas giant planets will be similar or different? Explain why or how. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Slide 12 31. Fix each sentence by crossing out, changing, or adding words as necessary. The gas giant planets are the planets nearest to the sun. The terrestrial planets are dense and have gaseous surfaces. The properties of the terrestrial planets are all pretty much the same. 4