Name: ___________________________ Hour: ___ Due Date: _______________ Date: ______________
Standard 3, Objective 1 & 2: TASA, Sedimentary Rock; Eighth Grade Integrated Science
Directions: Use the program on Rocks and Minerals to answer the questions below. After beginning the
program, select SEDIMENTARY ROCKS from the Main Menu. Answer the questions as carefully as possible.
Remember, when you are finished, it will be assumed that you understand the material that was covered in
the program. If you have questions during the program, make sure you ask!
How Sedimentary Rocks Form
1. What word means “converted into solid rock”? _______________________
2. What are the two types of weathering? _______________________
________________________
3. What is frost wedging? ____________________________________________________________________
4. What is a talus slope? _____________________________________________________________________
5. Why is it helpful to have rocks broken into smaller and smaller pieces? ______________________________
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6. Which type of weathering changes the internal structure of rock? _____________________________
7. What elements from the periodic table make up common table salt? ______________ _______________
8. What is the name of the table salt mineral? __________________________
9. Explain how salt dissolves in water. __________________________________________________________
_______________________________________________________________________________________
10. How is carbonic acid formed? ______________________________________________________________
______________________________________________________________________________________
11. Explain how carbonic acid helps to erode granite. ______________________________________________
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12. What mineral is very resistant to chemical weathering? ________________________
13. The first stage in forming a sedimentary rock is the production of sediment. Where is this sediment
normally deposited? ________________ ________________ ________________ _________________
14. How does it get to these places? ____________________________________________________________
15. What are the two methods in which this sediment can become rock?
16. Name three types of sedimentary rocks formed by these processes.
Conglomerates, Sandstone, and Shale
17. What are the four main minerals used to create sedimentary rocks?
18. How are they divided? ____________________________________________________________________
19. What is detritus? ________________________________________________________________________
20. Complete the following table. (This is your starter for today.)
Complete the following detrital sedimentary rock chart:
Detrital Rock Type
Size - Range
(millimeters)
Particle Name
Common Sediment
Name
Conglomerate
Breccia
Coquina
Sandstone
Shale
Mud-Stone
21. Soft, crumbly rock (such as shale) forms what type of slopes? _____________________________________
Limestone, Chert, and other Chemical Sedimentary Rocks
22. What is the source of chemical sedimentary rocks? _____________________________________________
23. What is the most abundant chemical sedimentary rock? __________________________
24. Name three examples of chemical sedimentary rocks.
25. What are evaporites and name one example. __________________________________________________
Reviewing Sedimentary Rocks
26. Try matching the rocks with there descriptions in the program.
Interpreting Past Environments
27. What is the single most characteristic feature of sedimentary rock? ________________________________
28. What does cross-bedding indicate of past geological conditions? ____________________________________
29. What do ripple marks indicate of past geological conditions? _____________________________________
30. What do mud cracks indicate of past geological conditions? ______________________________________
31. What do fern fossils found in sedimentary rock indicate of past geological conditions? _________________
32. The stronger the water current, the __________________ the particle size that can be carried.