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1. What is the study of rocks called?

a) Mineralogy

b) Petrology

c) Geology

d) Seismology

Answer: b) Petrology

2. Igneous rocks are formed by:

a) Sedimentation

b) Cooling and solidification of magma

c) Heat and pressure on existing rocks

d) Weathering of rocks

Answer: b) Cooling and solidification of magma

3. Which of the following is an intrusive igneous rock?

a) Basalt

b) Pumice

c) Granite

d) Obsidian

Answer: c) Granite

4. What is the name of the landform created by magma solidifying vertically?

a) Sill

b) Dike

c) Batholith

d) Laccolith

Answer: b) Dike

5. Which rock makes up the oceanic crust?

a) Granite

b) Basalt

c) Sandstone

d) Limestone

Answer: b) Basalt

6. Which of the following is NOT an extrusive igneous rock?

a) Rhyolite

b) Gabbro

c) Pumice

d) Obsidian

Answer: b) Gabbro

7. What is a domed-shaped intrusive landform called?

a) Dike

b) Sill

c) Laccolith

d) Batholith

Answer: c) Laccolith

8. Which of the following is a phaneritic rock?

a) Basalt

b) Obsidian

c) Granite

d) Pumice

Answer: c) Granite

9. What is the term for magma that solidifies inside the Earth's crust?

a) Extrusive

b) Intrusive

c) Volcanic

d) Plutonic

Answer: b) Intrusive

10. Which of the following is an example of a plutonic rock?

a) Basalt

b) Gabbro

c) Pumice

d) Scoria

Answer: b) Gabbro

11. Sedimentary rocks are formed by:

a) Cooling of magma

b) Deposition and compaction of sediments

c) Recrystallization under heat and pressure

d) Volcanic eruptions

Answer: b) Deposition and compaction of sediments

12. Which process converts sediments into sedimentary rock?

a) Metamorphism

b) Lithification

c) Crystallization

d) Weathering

Answer: b) Lithification

13. Fossils are most commonly found in which type of rock?

a) Igneous

b) Metamorphic

c) Sedimentary

d) Volcanic

Answer: c) Sedimentary

14. Which sedimentary rock is formed organically?

a) Sandstone

b) Coal

c) Halite

d) Gypsum

Answer: b) Coal

15. Which of the following is a chemically formed sedimentary rock?

a) Shale

b) Limestone

c) Conglomerate

d) Breccia

Answer: b) Limestone

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