The Rock Cycle: Energy Flow | Worksheet - Free Printable

Problem: Understanding the Rock Cycle and Energy Flow

The task involves labeling a diagram of the rock cycle, identifying processes powered by Earth's internal heat, and explaining the energy sources for other processes in the rock cycle. Below is a detailed solution:

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#### 1. Label the Diagram
The rock cycle involves the transformation of rocks from one type to another through various geological processes. Using the provided word bank, we can label the diagram as follows:

- Magma: This is molten rock beneath the Earth's surface. It is shown at the top of the diagram.
- Igneous Rock: Formed when magma cools and solidifies. This is labeled near the center-right of the diagram.
- Weathering/Erosion: These are processes that break down rocks into smaller particles (sediments). This is shown on the left side of the diagram.
- Sedimentation: The process where sediments are deposited and compacted. This is labeled below "Weathering/Erosion."
- Sedimentary Rock: Rocks formed from compacted sediments. This is shown below "Sedimentation."
- Metamorphism: The process where existing rocks are transformed under heat and pressure into new rock types. This is labeled below "Sedimentary Rock."
- Metamorphic Rock: Rocks formed through metamorphism. This is shown below "Metamorphism."
- Melting: The process where rocks are heated and turned back into magma. This is shown on the right side of the diagram.
- Crytallization: The process where magma cools and solidifies into igneous rock. This is shown above "Igneous Rock."

Labeled Diagram:
- Top: Magma
- Center-left: Weathering/Erosion
- Left-middle: Sedimentation
- Bottom-left: Sedimentary Rock
- Bottom-center: Metamorphism
- Bottom-right: Metamorphic Rock
- Right-middle: Melting
- Center-right: Igneous Rock
- Above "Igneous Rock": Crystallization

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#### 2. Which Processes in the Rock Cycle Are Powered by Earth's Internal Heat? Explain How You Know.

Processes powered by Earth's internal heat include:
- Melting: When rocks are subjected to high temperatures deep within the Earth, they melt into magma. This is driven by the heat generated from the Earth's core and mantle.
- Metamorphism: Existing rocks are transformed into metamorphic rocks under extreme heat and pressure. The heat comes from the Earth's interior.
- Crystallization: Magma cools and solidifies into igneous rock. While cooling occurs over time, the initial melting and movement of magma are driven by internal heat.

Explanation: These processes involve high temperatures and pressures that are only found deep within the Earth, which are powered by the Earth's internal heat source (e.g., radioactive decay in the mantle).

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#### 3. Several Processes in the Rock Cycle, Such as Weathering and Erosion, Are Not Powered by Earth's Internal Heat. Where Does the Energy for These Processes Ultimately Come From? Explain How You Know.

Processes such as weathering and erosion are not powered by Earth's internal heat. Instead, they are driven by external energy sources, primarily:
- Solar Energy: The Sun provides the energy for weathering processes like thermal expansion (heating and cooling of rocks), chemical weathering (dissolution of minerals), and biological weathering (plants breaking rocks apart).
- Wind and Water Energy: Wind and water carry sediments and erode rocks, powered by atmospheric and hydrological systems, which are ultimately fueled by solar energy.

Explanation: Weathering and erosion occur at or near the Earth's surface, where external forces like wind, water, temperature changes, and biological activity play key roles. These processes do not require the high temperatures and pressures associated with Earth's internal heat.

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Final Answer:

1. Labeled Diagram:
- Top: Magma
- Center-left: Weathering/Erosion
- Left-middle: Sedimentation
- Bottom-left: Sedimentary Rock
- Bottom-center: Metamorphism
- Bottom-right: Metamorphic Rock
- Right-middle: Melting
- Center-right: Igneous Rock
- Above "Igneous Rock": Crystallization

2. Processes Powered by Earth's Internal Heat:
- Melting
- Metamorphism
- Crystallization

3. Energy Source for Weathering and Erosion:
- Solar Energy
- Wind and Water Energy

Boxed Final Answer:
\boxed{
\text{1. Labeled Diagram as described above.}
\text{2. Melting, Metamorphism, Crystallization.}
\text{3. Solar Energy, Wind and Water Energy.}
}