Download CHAPTER 9.2: The Inner Planets

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? _________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________