1. Rugged mountain ranges like the Rocky Mountains are primarily composed of which type of rock, formed from cooled magma?
- A. Sedimentary rock
- B. Igneous rock
- C. Metamorphic rock
- D. Fossilized rock
2. What is the correct sequence of events that leads to the formation of mountains made of igneous rock?
- A. Rock is uplifted, melts into magma due to sun exposure, and then cools.
- B. Surface rock is eroded, compacted underground into magma, and then solidifies.
- C. Deep rock melts into magma, which then cools, solidifies, and is pushed upward.
- D. Magma erupts from a volcano, cools quickly on the surface, and is then compressed downward.
3. What is the fundamental source of energy that melts rock into magma deep beneath the Earth's surface?
- A. Solar radiation absorbed by the crust
- B. Earth's internal heat
- C. Chemical reactions in groundwater
- D. Frictional heat from wind erosion
4. What is the key difference between magma and the igneous rock that forms mountains?
- A. Magma is found at the surface, while igneous rock is only found underground.
- B. Magma is molten rock, while igneous rock is rock that has cooled and solidified.
- C. Magma is made of organic materials, while igneous rock is made of inorganic minerals.
- D. Magma has a dark color, while igneous rock is always light in color.
5. For a large, underground body of cooled magma (igneous rock) to become a mountain peak visible on the surface, which geological process must occur?
- A. Erosion
- B. Weathering
- C. Uplift
- D. Subduction
6. The formation of sedimentary rock layers in flat terrains is primarily driven by what fundamental energy source?
- A. Geothermal energy
- B. Solar energy
- C. Gravitational energy
- D. Chemical energy
7. Which process is essential for converting loose layers of weathered debris into solid sedimentary rock?
- A. Melting
- B. Compaction
- C. Erosion
- D. Crystallization
8. What is the initial source of the material that eventually forms the sedimentary rock of the Great Plains?
- A. Debris from weathered existing rocks
- B. Molten lava from deep within the Earth
- C. Minerals precipitating directly from magma
- D. Organic matter from ancient forests
9. If you were to analyze the rock composition of a landscape formed by the processes described, what would you most likely find?
- A. A single, massive layer of granite
- B. Layers of sandstone, shale, and limestone
- C. Primarily basalt and other volcanic rocks
- D. Folded and faulted metamorphic rocks like gneiss
10. Vast, flat landscapes like the Great Plains are primarily composed of which type of rock?
- A. Igneous rock, formed from cooled magma
- B. Metamorphic rock, altered by intense heat and pressure
- C. Sedimentary rock, formed from the accumulation and compaction of weathered debris
- D. Volcanic rock, ejected from a volcanic eruption