Earth Science
Name_____________________________
Chapter 9
Period_____________________________
Lab
Date______________________________
__________________________________________________________________________________
Reviewing Rocks
In this exercise, you will explore and review the principles behind minerals using a computer program on the server.
(0.2 points per blank, 20 points total)
To begin
Click on
 Science Applications
 Intermediate Rocks and Minerals
 Click on the square button in the lower left-hand corner of the screen to go to the main menu
 Go to the appropriate section and answer the questions on the sheet below.
The Rock Cycle
1. List the three main rock types of the rock cycle.
2. How are igneous rocks formed?
3. When igneous rocks are exposed at the surface, they will undergo _______________.
4. List 4 agents of erosion. _______________, _______________, _______________,
_______________.
5. After erosion the particles and dissolved substances become _______________ and are deposited.
6. Sediments eventually undergo a hardening process called _______________. This may be done by
means of _______________ or _______________ in which sediment grains are held together by a
natural _______________.
7. Weathering can either be _______________ or _______________.
How igneous rocks form
8. Igneous rocks form when molten rock _______________ and _______________.
9. Molten Rock can move to the surface because it is less _______________
10. Click to view volcanic ash, cinders and bombs.
11. Extrusive igneous rocks form_______________ the Earth’s surface and intrusive igneous rocks forms
_______________ the Earth’s surface.
12. Is a sill a horizontal or vertical igneous rock layer? Circle one
13. The texture of an igneous rock is affected by the _______________ rate of magma.
14. Rapid cooling makes_______________ crystals and slow cooling makes_______________ crystals.
15. Rhyolite has a _______________texture, and granite has a _______________texture.
16. Obsidian on the other hand has a _______________ texture whish indicates its cooling was
_______________.
17. How does the density of pumice compare to water? _______________
18. Light colored igneous rocks are rich in _______________ and _______________.
19. Give an example of a light colored igneous rock.
20. Igneous rocks composed mainly of or quartz and potassium feldspar are said to have
_______________.
21. _______________ rocks are commonly found on the continents.
22. Dark-colored igneous rocks mainly composed of pyroxene and calcium-rich feldspar are said to have a
_______________.
23. Basaltic rocks are found in the _______________ beneath the oceans on volcanic islands like
_______________ and in some volcanic regions on continents.
24. Rocks with a mineral composition between _______________ and_______________ rocks have an
_______________ _______________
25. _______________ _______________ are frequently part of large continental volcanoes.
Sedimentary Rocks
26. When rocks are broken into smaller pieces it _______________ the surface area available for
_______________ attack.
27. Mechanical weathering breaks rocks into smaller fragments without a change in composition, where as
_______________ alters the chemical structure of _______________ by removing and/or adding
elements.
28. ______________ is one of the most water-soluble minerals.
29. Many other chemical reaction breaks down rocks by _______________ the chemical structure.
30. Carbonic acid forms when rain dissolves _______________ as it falls through the atmosphere.
31. Carbonic acid slowly reacts with _______________ to produce insoluble clay minerals.
32. These clay minerals are often carried to a body of water where they may eventually become the
_______________.
33. _______________, the other main component of granite, is very resistant to _______________
weathering.
34. With the breakdown of feldspar, quartz grains are released, these resistant grains may accumulate as
_______________, _______________ or other sandy deposits.
35. List three types of sedimentary rocks; _______________, ________________, & _______________.
36. Under what conditions may sedimentary rock turn into metamorphic rock? ________________
37. Can sedimentary rock turn into igneous rock? _____. If so, under what conditions? _______________
How Sedimentary Rocks Form
38. In frost wedging, it is broken into _______________ pieces.
39. At the base of a cliff, falling rock can produce a _______________ slope.
40. Breaking rock into _______________ pieces _______________ the surface area available for chemical
attack.
41. Mechanical weathering breaks into smaller fragments without a change in composition,
_______________ _______________ alters the chemical structure of _______________ by removing
and adding elements.
42. A simple type of chemical weathering occurs when a mineral ________________ in water.
43. Halite is one of the most _________________________.
44. Halite’s composed of _______________ charged sodium ions and _______________ charged chloride
ions.
45. Halite dissolves in _______________ because _______________ end of the water molecule.
46. Calcite ________________ in acid.
47. Rainwater combining with carbon dioxide produces _______________ acid.
48. Which part of the rock granite disintegrates from carbonic acid? ________________ What weathered
product does it turn into? _______________
49. Eventually clay turns into the sedimentary rock _______________.
50. Lithification (hardening) of sediments can be done by _______________ or by _______________.
51. Three sedimentary rocks are ________________, _______________, and _______________.
Metamorphic Rocks
52. The word metamorphic means _______________ _______________.
53. Can metamorphic rock form from an igneous rock? _____ …from a sedimentary rock? _____ …from
other metamorphic rocks? _____
54. Metamorphosis in rocks can be caused by _______________, _______________ and
____________________.
55. Heated sulfur and iron turn to the mineral _______________.