Rock Cycle in Earths Crust Worksheet for 7th - 10th Grade ... - Free Printable
Educational worksheet: Rock Cycle in Earths Crust Worksheet for 7th - 10th Grade .... Download and print for classroom or home learning activities.
JPG
228×295
89.3 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #1006216
⭐
Show Answer Key & Explanations
Step-by-step solution for: Rock Cycle in Earths Crust Worksheet for 7th - 10th Grade ...
▼
Show Answer Key & Explanations
Step-by-step solution for: Rock Cycle in Earths Crust Worksheet for 7th - 10th Grade ...
To solve the problem, we need to understand the rock cycle and how different types of rocks are formed through various geological processes. Let's go through each question step by step:
---
- Explanation: Igneous rocks are formed when magma (molten rock beneath the Earth's surface) or lava (molten rock on the Earth's surface) cools and solidifies. This process is called crystallization.
---
- Explanation:
- Intrusive igneous rocks form when magma cools and solidifies beneath the Earth's surface. Examples include granite and gabbro.
- Extrusive igneous rocks form when lava cools and solidifies on the Earth's surface. Examples include basalt and obsidian.
---
- Explanation: Sedimentary rocks are formed from the accumulation and lithification (hardening) of sediments. These sediments are derived from the weathering and erosion of pre-existing rocks. The process involves:
- Compaction: Sediments are compressed under their own weight or by overlying layers.
- Cementation: Minerals dissolved in water precipitate and bind the sediment particles together.
---
- Explanation: Sediments are fragments of rocks that have been broken down by weathering (physical, chemical, or biological breakdown of rocks) and transported by agents like wind, water, or ice. Erosion is the process of removing these weathered materials and transporting them to new locations where they can accumulate and eventually form sedimentary rocks.
---
- Explanation:
- Clastic sedimentary rocks are composed of fragments or clasts of pre-existing rocks. Examples include sandstone, shale, and conglomerate.
- Non-clastic sedimentary rocks are formed from minerals that are precipitated from water solutions or from organic material. Examples include limestone and evaporites like halite.
---
- Answer: Metamorphism
- Explanation: Metamorphism is the process by which existing rocks are transformed into new rocks due to changes in temperature, pressure, or chemical environment. Igneous rocks can be subjected to heat and pressure deep within the Earth, causing them to recrystallize and form metamorphic rocks.
---
- Answer: Melting (Magma formation)
- Explanation: Sedimentary rocks can be subjected to high temperatures and pressures, causing them to melt and form magma. When this magma cools and solidifies, it forms igneous rocks.
---
- Answer: Weathering and erosion
- Explanation: Metamorphic rocks, like any other type of rock, can be subjected to weathering (breakdown) and erosion (transport). The resulting fragments can accumulate and undergo compaction and cementation to form sedimentary rocks.
---
1. Igneous rocks can form from magma or lava.
2. Igneous rocks can form intrusive and extrusive rocks.
3. Sedimentary rocks form from weathered rock particles by the process of compaction and cementation.
4. Sediments form from the process of weathering and erosion.
5. Sedimentary rocks can form clastic and non-clastic rocks.
6. Metamorphism
7. Melting (Magma formation)
8. Weathering and erosion
---
\[
\boxed{
\begin{array}{l}
1. \text{magma or lava} \\
2. \text{intrusive and extrusive} \\
3. \text{compaction and cementation} \\
4. \text{weathering and erosion} \\
5. \text{clastic and non-clastic} \\
6. \text{Metamorphism} \\
7. \text{Melting (Magma formation)} \\
8. \text{Weathering and erosion}
\end{array}
}
\]
---
1. Igneous rocks can form from magma or lava.
- Explanation: Igneous rocks are formed when magma (molten rock beneath the Earth's surface) or lava (molten rock on the Earth's surface) cools and solidifies. This process is called crystallization.
---
2. Igneous rocks can form intrusive and extrusive rocks.
- Explanation:
- Intrusive igneous rocks form when magma cools and solidifies beneath the Earth's surface. Examples include granite and gabbro.
- Extrusive igneous rocks form when lava cools and solidifies on the Earth's surface. Examples include basalt and obsidian.
---
3. Sedimentary rocks form from weathered rock particles by the process of compaction and cementation.
- Explanation: Sedimentary rocks are formed from the accumulation and lithification (hardening) of sediments. These sediments are derived from the weathering and erosion of pre-existing rocks. The process involves:
- Compaction: Sediments are compressed under their own weight or by overlying layers.
- Cementation: Minerals dissolved in water precipitate and bind the sediment particles together.
---
4. Sediments form from the process of weathering and erosion.
- Explanation: Sediments are fragments of rocks that have been broken down by weathering (physical, chemical, or biological breakdown of rocks) and transported by agents like wind, water, or ice. Erosion is the process of removing these weathered materials and transporting them to new locations where they can accumulate and eventually form sedimentary rocks.
---
5. Sedimentary rocks can form clastic and non-clastic rocks.
- Explanation:
- Clastic sedimentary rocks are composed of fragments or clasts of pre-existing rocks. Examples include sandstone, shale, and conglomerate.
- Non-clastic sedimentary rocks are formed from minerals that are precipitated from water solutions or from organic material. Examples include limestone and evaporites like halite.
---
6. Which process changes igneous rock into metamorphic rock?
- Answer: Metamorphism
- Explanation: Metamorphism is the process by which existing rocks are transformed into new rocks due to changes in temperature, pressure, or chemical environment. Igneous rocks can be subjected to heat and pressure deep within the Earth, causing them to recrystallize and form metamorphic rocks.
---
7. Which process changes sedimentary rock into igneous rock?
- Answer: Melting (Magma formation)
- Explanation: Sedimentary rocks can be subjected to high temperatures and pressures, causing them to melt and form magma. When this magma cools and solidifies, it forms igneous rocks.
---
8. Which process changes metamorphic rock into sedimentary rock?
- Answer: Weathering and erosion
- Explanation: Metamorphic rocks, like any other type of rock, can be subjected to weathering (breakdown) and erosion (transport). The resulting fragments can accumulate and undergo compaction and cementation to form sedimentary rocks.
---
Final Answers:
1. Igneous rocks can form from magma or lava.
2. Igneous rocks can form intrusive and extrusive rocks.
3. Sedimentary rocks form from weathered rock particles by the process of compaction and cementation.
4. Sediments form from the process of weathering and erosion.
5. Sedimentary rocks can form clastic and non-clastic rocks.
6. Metamorphism
7. Melting (Magma formation)
8. Weathering and erosion
---
Boxed Final Answer:
\[
\boxed{
\begin{array}{l}
1. \text{magma or lava} \\
2. \text{intrusive and extrusive} \\
3. \text{compaction and cementation} \\
4. \text{weathering and erosion} \\
5. \text{clastic and non-clastic} \\
6. \text{Metamorphism} \\
7. \text{Melting (Magma formation)} \\
8. \text{Weathering and erosion}
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of rock cycle questions worksheet.
