FAIRLY SIMPLE GEOLOGY EXERCISES
for
STUDENTS AND THEIR TEACHERS
Topics
Fairly Simple Mineral Identification
Fairly Simple Rock Identification
Easy (and Cheap) Crystal Growing
GEOLOGISTS' CLUES
Barbara R. Thomas
Fill in the blanks. The first letters of the answers will spell three clues a geologist uses to determine conditions under which a sedimentary rock was formed.
1. ________________ Useful to identify the mineral
magnetite
2. ________________ Opposite of down
3. ________________ Very hard mineral with the same composition
as graphite
4. ________________ Sedimentary rock formed from plant material
5. ________________ What geologists study
6. ________________ Very small particles blown from a volcano
7. ________________ A kind of limestone that is made from shells
8. ________________ A very soft clay mineral
9. ________________ A clastic sedimentary rock formed of very small
particles
10. _______________ Basalt with holes
11. _______________ Makes calcite fizz.
12. _______________ Magma that reaches the surface
13. _______________ Soft mineral with greasy feel
14. _______________ Water that comes from clouds
15. _______________ What happens to water in a dry climate
16. _______________ Coarse grained igneous rock that is mostly light
colored feldspar
17. _______________ Mineral in limestone
18. _______________ Volcanic glass
19. _______________ Light reflected from a surface, a clue to mineral
identification
20. _______________ A valuable liquid found in some rocks
21. _______________ Pink, fine grained igneous rock
Unscramble the letters to find five other clues that geologists use to understand sedimentary and igneous rocks.
a) lipper skarm __________________
b) gadder dibgend __________________
c) slisofs _______________
d) rettuxe _______________
e) liwolp lastab ______________________
Go to Geologists' Clues Answer Sheet.
ANSWER SHEET - GEOLOGISTS' CLUES
Barbara R. Thomas
Fill in the blanks. The first letters of the answers will spell three clues a geologist uses to determine conditions under which a sedimentary rock was formed.
1. __Magnet_________Useful to identify the mineral magnetite
2. __Up____________ Opposite of down
3. __Diamond_______ Very hard mineral with the same composition as graphite
4. __Coal___________ Sedimentary rock formed from plant material
5. __Rocks_________ What geologists study
6. __Ash___________ Very small particles blown from a volcano
7. __Cocquina_______ A kind of limestone that is made from shells
8. __Kaolinite_______ A very soft clay mineral
9. __Shale__________ A clastic sedimentary rock formed of very small particles
10. _Scoria_________ Basalt with holes
11. _Acid__________ Makes calcite fizz.
12. _Lava__________ Magma that reaches the surface
13. _Talc__________ Soft mineral with greasy feel
14. _Rain__________ Water that comes from clouds
15. _Evaporates_____ What happens to water in a dry climate
16. _Diorite________ Coarse grained igneous rock that is mostly light
colored feldspar
17. _Calcite________ Mineral in limestone
18. _Obsidian______ Volcanic glass
19. _Luster_________ Light reflected from a surface, a clue to mineral
identification
20. _Oil___________ A valuable liquid found in some rocks
21. _Rhyolite_______ Pink, fine grained igneous rock
Conditions under which a sedimentary rock was formed: Mudcracks
Salt
Red
color
Unscramble the letters to find five other clues that geologists use to understand sedimentary and igneous rocks.
a) lipper skarm __ripple marks_________
b) gadder dibgend __graded bedding_______
c) slisofs __fossils______
d) rettuxe __texture______
e) liwolp lastab __pillow basalt_______
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