Earth Science
Name_____________________________
Chapter 10
Period_____________________________
Worksheet
Date______________________________
__________________________________________________________________________________
Rocks
Rocks and the Rock Cycle (0.1 points each blank)
_______________ 1. The parent material of all Earth’s rock is _____ from the Earth’s interior.
_______________ 2. Igneous rocks form from _____ or _____.
_______________ 3. Sedimentary rocks form from compaction and _____ of sediment grains.
_______________ 4. Metamorphic rocks form from great _____ and _____.
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A______________ 5. Below is a diagram of the rock cycle. Fill in the missing words for A, B, and C.
B______________
C______________
6. Summarize what happens in the rock cycle.
(0.5 points)
Igneous Rocks (0.1 points each blank)
_______________ 7. Intrusive igneous rocks have _____ crystals due to slow cooling.
_______________ 8. Crystals in extrusive igneous rocks are _____ due to rapid cooling.
_______________ 9. The size of crystal grains is referred to as the rock’s _____.
_______________ 10. In figure 10-4, the mineral’s grain size would be categorized as _____.
_______________ 11. Figure 10-5 shows Devil’s Tower in Wyoming. What rock is it made of and what
_______________
would be that rock’s grain size?
_______________ 12. Obsidian has a _____ texture because it has _____ crystal grains.
_______________
_______________ 13. The chemical composition of an igneous rock can be either _____, or high in silica,
_______________
or _____, low in silica and high in iron and magnesium.
Sedimentary Rock (0.1 points each blank)
_______________ 14. Sedimentary rock can be formed by the process of _____ and _____.
_______________
_______________ 15. The main ingredient of the rock sandstone is the mineral _____.
_______________ 16. Shale is made of flat layers of _____.
_______________ 17. Chemical sedimentary rocks are made from minerals that were once dissolved in
_____.
_______________ 18. Coal is thought to have been made from _____.
_______________ 19. Chalk was made from tiny _____ organisms.
_______________ 20. Figure 19-9 shows an illustration of _____.
Metamorphic Rock (0.1 points each blank)
_______________ 21. Most metamorphic rock forms _____ in the Earth.
_______________ 22. Which rock in figure 10-11 shows a foliated structure?
_______________ 23. Which two rocks in figure 10-12 show a non-foliated structure?
_______________
24. How does contact metamorphism happen? Draw a picture of this. (0.75 points)
25. How does regional metamorphism happen? Draw a picture of this. (0.75 points)