Earth Science: Test on Rocks
Name: _______________
True or False (1 point each)
Indicate whether the following statements are true or false.
1.
Igneous rocks form when melted rock hardens.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Igneous rocks are classified according to their shape.
The texture of igneous rocks depends upon how old the rocks are.
Sedimentary rocks may contain the remains of living things
Shale is a metamorphic rock
Igneous rock is formed from bits of rock that are pressed together.
Metamorphic Rocks have parent rocks
Fossils would most likely be found in Sedimentary Rock
Sedimentary Rocks are harder to break than Igneous Rocks
Sandstone is softer than obsidian.
Matching (1 point each)
1. Igneous rocks formed when lava cools on the Earth’s surface.
2. Rocks formed from cooled and hardened magma or lava.
3. Igneous rocks formed when magma cools beneath the Earth’s surface.
4. Melted rock beneath the Earth’s surface.
5. The squeezing of air and water out of sediments and the
pressing of the fragments together.
6. Rocks formed from sediments that have been compacted
and cemented together.
7. A rock structure with visible layers or bands aligned in planes.
8. The process of change in the structure and constitution of a rock.
Answer Box
A. Magma
B. Sedimentary rocks
C. Compaction
D. Metamorphism
E. Intrusive rocks
F. Igneous rocks
G. Foliated structure
H. Extrusive rocks
Really Short Answer (3 point each)
Choose any 4 of the following rocks, and tell which of the three major types of rock it is.
Shale
Marble
Coal
Slate
Quartz
Sandstone
Gypsum
Obsidian
Coal
Granite
1.
2.
3.
4.
Multiple Choice (2 point each)
1. Metamorphic rock is
a. rock that is formed by changing other rocks over time by heat and pressure.
b. rock that partially dissolves in water.
c. rock that changes due to acid rain.
d. rock that is formed by being melted and recrystallized.
2. Sedimentary rock is
a. formed by melting and recrystallization.
b. formed by the compacting and cementation of sediments.
c. found deep within the Earth.
d. All of the above.
.
3. Clastic rock is
a. a type of sedimentary rock formed from minerals that were once dissolved.
b. a type of metamorphic rock formed from dead organisms.
c. a type of igneous rock formed from magma as it leaves the Earth.
d. a type of sedimentary rock formed from particles and fragments of rock that were deposited
by water or wind.
4. Conglomerate is
a. sedimentary rock that is formed from smooth, pebble-sized rock fragments.
b. sedimentary rock that is formed from smaller rock fragments with sharp edges.
c. metamorphic rock that is formed by high pressures that squeezes the air from among the
smaller stone fragments.
d. igneous rock that is formed from the combination of many different minerals.
Short Answers (3 point each)
1. Name the three major types of rocks. Choose one of the three and describe how it is
formed.
2. Explain the difference between Intrusive Igneous Rock and Extrusive Igneous Rock?
3. What can rocks teach us about the way that God works in creation? 4. What is the difference between a rock and a mineral?