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Name:_____________________________________________ Date: _______________ CHAPTER 9.2: The Inner Planets Direc&ons: Read your science textbook pages 362-‐369. Complete the BLUE ques1ons 1-‐5 also complete the review table on p. 367. in the book. Answer below. 1. __________________________________planets is another name for the inner planets. 2. They are called terrestrial because they are ___________________________________ ______________________________________________________________________ 3. ___________________________is the smallest of the inner planets. 4. Why doesn’t Mercury have an atmosphere? ___________________________________ _______________________________________________________________________ 5. Without an atmosphere, temperatures are extreme on Mercury they can be as high as __________________ on the side facing the Sun (day) and as cold as _______________ on the side away from the Sun (night). 6. __________________________________ are depressions on formed on a rocky surface by collisions with objects from space. 7. Why is there almost no erosion on Mercury? __________________________________ _______________________________________________________________________ 8. Mercury’s core, like all inner planets, is made of _______________and _____________. 9. Mercury’s mantle is made of ______________________ and _____________________. 10. Study Figure 2. How long is a year on Mercury? _________________ 11. From Figure 2. You will see that while Mercury revolves around the Sun much faster than Earth that it’s day is MUCH longer. In fact, one Mercurian day = _______________ Earth days. 12. Venus is about the same size as _______________________. For this reason it is o\en called Earth’s Twin. 13. Closer to the sun, a year on Venus is ________________er than a year on Earth. 14. Study Figure 3. How long is a year on Venus? _________________ 15. From Figure 2. You will see that while Venus has a day that is LONGER than its year. One Venus day = _________________Earth days. 16. Venus has a rotaaon that is opposite of most objects in our solar system, instead of rotaang west to east, Venus rotates _____________ to _______________. 17. Venus’s atmosphere is ______________percent CO2. 18. The atmosphere is so dense that air pressure is a crushing ___________ames greater on Venus than on Earth. 19. The _____________________________effect occurs when a planet’s atmosphere traps solar energy and causes the temperature to increase. 20. The average temperature on Venus day and night is __________________. 21. The _____________________________space probe was an orbiter that used radar to map the surface of Venus through its thick cloud layer. 22. Home sweet home, ___________________is the third terrestrial planet from the Sun. 23. Unlike Mercury and Venus, Earth has a __________________. 24. Earth’s protecave atmosphere, __________________________________, and the planet’s moderate ___________________________range support a variety of life. 25. Does Earth have a greenhouse effect? __________ but it is just ______________ for keeping Earth warm enough for life to exist. 26. Figure 4. A day on Earth is ___________________ 27. Figure 4. A year on Earth is _______________________ 28. The outer layer of the Earth is called the crust. It is broken into large pieces called ____________________ that slide past, away from or into each other. 29. When Earth’s plates move they can cause _____________________erupaons that create new crust. 30. Earth is the only planet in the solar system with __________________water on its surface. 31. Mars is only __________% of the size of Earth. 32. Mars has ___________moons that are not spheres. They irregularly shaped more like captured _______________________. 33. Figure 5. A year on Mars is ______________Earth years. 34. Figure 5. A day on Mars is very similar to a day on Earth __________hours. 35. Mars has the largest know volcano in the solar system. __________________________ is as wide as Arizona and three ames the height of Mt. Everest. 36. Mars atmosphere is very thin and is made up of _______________% CO2. 37. Maraan temperatures range from _____________ at the poles to about ____________ at the equator in summer. 38. Why is Mars surface red? __________________________________________________ _______________________________________________________________________ 39. Mars polar ice caps are made up of frozen _____________ and ______________. 40. Mars southern hemisphere is covered with _________________. 41. Mars northern hemisphere is covered with _________________________________. 42. READ PAGE 369. Why would people want to move to Mars? Would you? _________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________