Metamorphic Rocks Quiz for Grade 7 Science with Answer Key

📚 Quick Study Guide

• 🔥 Metamorphic rocks are formed from other rocks (igneous, sedimentary, or other metamorphic rocks) that are changed by heat, pressure, or chemical processes.
• 🌡️ Heat causes minerals to recrystallize.
• ⛰️ Pressure can cause minerals to align, creating foliation (layers).
• 🧪 Chemical reactions with hot fluids can change the composition of the rock.
• 🍃 Foliated metamorphic rocks have a layered or banded appearance (e.g., gneiss, schist).
• 🌑 Non-foliated metamorphic rocks do not have a layered appearance (e.g., marble, quartzite).
• 🧭 Examples: Shale becomes slate; limestone becomes marble; sandstone becomes quartzite; granite becomes gneiss.

🧪 Practice Quiz

1. Which process is most responsible for the formation of metamorphic rocks?
   1. Weathering and erosion
   2. Melting and cooling
   3. Heat and pressure
   4. Sedimentation and compaction
2. What is the term for the layered appearance often found in metamorphic rocks?
   1. Foliation
   2. Cementation
   3. Compaction
   4. Crystallization
3. Which of the following is an example of a foliated metamorphic rock?
   1. Marble
   2. Quartzite
   3. Gneiss
   4. Sandstone
4. Which type of rock does marble originate from?
   1. Granite
   2. Shale
   3. Limestone
   4. Sandstone
5. What is the primary agent of change in contact metamorphism?
   1. Pressure
   2. Heat
   3. Chemical weathering
   4. Erosion
6. Which metamorphic rock is commonly used for countertops and is formed from sandstone?
   1. Slate
   2. Marble
   3. Quartzite
   4. Schist
7. What is the parent rock of slate?
   1. Granite
   2. Limestone
   3. Shale
   4. Sandstone