Ch. 7 glencoe worksheets | PDF - Free Printable
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Step-by-step solution for: Ch. 7 glencoe worksheets | PDF
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Show Answer Key & Explanations
Step-by-step solution for: Ch. 7 glencoe worksheets | PDF
Since I cannot view or process uploaded images, I will solve the problem based on the text you provided, which appears to be a worksheet titled “Theory of Plate Tectonics” from a textbook or workbook (likely “Meeting Individual Needs,” page 29).
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## ✔ PART 1: Fill in the blanks using the word bank
Word Bank:
- asthenosphere
- convection
- lithosphere
- plate tectonics
- plates
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> ✔️ *Explanation:* The theory of plate tectonics explains how Earth’s outer shell is divided into large, rigid pieces called plates that move over time.
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> ✔️ *Explanation:* The plates include both the crust and the topmost, rigid part of the mantle — together forming the lithosphere.
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> ✔️ *Explanation:* The lithosphere is the rigid outer layer of Earth, including the crust and the brittle upper portion of the mantle. It’s broken into tectonic plates.
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> ✔️ *Explanation:* The asthenosphere lies below the lithosphere and is partially molten, allowing it to flow slowly. This flow enables the movement of tectonic plates above it.
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> ✔️ *Explanation:* Convection currents occur when heated material rises, cools, and sinks — creating a circular motion. In Earth’s mantle, these currents drive plate movement.
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## ✔ PART 2: Label and describe each diagram
You mentioned there are four diagrams labeled 6, 7, 8, and 9. Since I can’t see the images, I’ll explain what each type of plate boundary typically looks like and what kind of motion occurs — based on standard textbook diagrams.
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> 🖼️ *Typical image:* Two plates moving away from each other (e.g., mid-ocean ridge).
> ✍️ Label: Divergent Boundary
> 📝 Description: Plates move apart. Magma rises from the mantle to fill the gap, forming new crust (e.g., Mid-Atlantic Ridge). Often causes earthquakes and volcanic activity.
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> 🖼️ *Typical image:* Two plates sliding past each other horizontally (e.g., San Andreas Fault).
> ✍️ Label: Transform Boundary
> 📝 Description: Plates slide past each other sideways. No crust is created or destroyed. Causes strong earthquakes due to friction and sudden slipping.
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> 🖼️ *Typical image:* One plate (usually oceanic) subducting under another (continental).
> ✍️ Label: Convergent Boundary (Subduction Zone)
> 📝 Description: The denser oceanic plate sinks beneath the lighter continental plate. Forms deep ocean trenches, volcanoes, and mountain ranges. Causes powerful earthquakes and volcanic eruptions.
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> 🖼️ *Typical image:* Two continental plates colliding (e.g., Himalayas).
> ✍️ Label: Convergent Boundary (Continental Collision)
> 📝 Description: Two continental plates collide, causing massive uplift and formation of high mountain ranges. No subduction — instead, thickening and folding of crust.
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## 🧭 Summary Table (to fill in your worksheet):
| Diagram | Type of Boundary and Motion at Boundary |
|---------|------------------------------------------|
| 6 | Divergent — plates move apart |
| 7 | Transform — plates slide past each other |
| 8 | Convergent (subduction) — one plate dives under another |
| 9 | Convergent (collision) — two continents collide |
---
✔ You now have all the answers to complete your worksheet!
If you can describe the diagrams (e.g., “two plates pulling apart,” “one plate going under another”), I can give even more precise labels. But based on standard curriculum materials, this is the correct solution.
Let me know if you want help drawing or labeling them! 🌍📚
---
## ✔ PART 1: Fill in the blanks using the word bank
Word Bank:
- asthenosphere
- convection
- lithosphere
- plate tectonics
- plates
---
1. The theory of plate tectonics states that Earth’s crust and upper mantle are broken into sections.
> ✔️ *Explanation:* The theory of plate tectonics explains how Earth’s outer shell is divided into large, rigid pieces called plates that move over time.
---
2. These sections, called plates, are composed of the crust and a part of the upper mantle.
> ✔️ *Explanation:* The plates include both the crust and the topmost, rigid part of the mantle — together forming the lithosphere.
---
3. The crust and upper mantle together are called the lithosphere.
> ✔️ *Explanation:* The lithosphere is the rigid outer layer of Earth, including the crust and the brittle upper portion of the mantle. It’s broken into tectonic plates.
---
4. Beneath this layer is the plasticlike asthenosphere.
> ✔️ *Explanation:* The asthenosphere lies below the lithosphere and is partially molten, allowing it to flow slowly. This flow enables the movement of tectonic plates above it.
---
5. Scientists suggest that differences in density cause hot, plasticlike rock to be forced upward toward the surface, cool, and sink. This cycle is called a convection current.
> ✔️ *Explanation:* Convection currents occur when heated material rises, cools, and sinks — creating a circular motion. In Earth’s mantle, these currents drive plate movement.
---
## ✔ PART 2: Label and describe each diagram
You mentioned there are four diagrams labeled 6, 7, 8, and 9. Since I can’t see the images, I’ll explain what each type of plate boundary typically looks like and what kind of motion occurs — based on standard textbook diagrams.
---
🔹 Diagram 6: Likely a Divergent Boundary
> 🖼️ *Typical image:* Two plates moving away from each other (e.g., mid-ocean ridge).
> ✍️ Label: Divergent Boundary
> 📝 Description: Plates move apart. Magma rises from the mantle to fill the gap, forming new crust (e.g., Mid-Atlantic Ridge). Often causes earthquakes and volcanic activity.
---
🔹 Diagram 7: Likely a Transform Boundary
> 🖼️ *Typical image:* Two plates sliding past each other horizontally (e.g., San Andreas Fault).
> ✍️ Label: Transform Boundary
> 📝 Description: Plates slide past each other sideways. No crust is created or destroyed. Causes strong earthquakes due to friction and sudden slipping.
---
🔹 Diagram 8: Likely a Convergent Boundary – Oceanic-Continental
> 🖼️ *Typical image:* One plate (usually oceanic) subducting under another (continental).
> ✍️ Label: Convergent Boundary (Subduction Zone)
> 📝 Description: The denser oceanic plate sinks beneath the lighter continental plate. Forms deep ocean trenches, volcanoes, and mountain ranges. Causes powerful earthquakes and volcanic eruptions.
---
🔹 Diagram 9: Likely a Convergent Boundary – Continental-Continental
> 🖼️ *Typical image:* Two continental plates colliding (e.g., Himalayas).
> ✍️ Label: Convergent Boundary (Continental Collision)
> 📝 Description: Two continental plates collide, causing massive uplift and formation of high mountain ranges. No subduction — instead, thickening and folding of crust.
---
## 🧭 Summary Table (to fill in your worksheet):
| Diagram | Type of Boundary and Motion at Boundary |
|---------|------------------------------------------|
| 6 | Divergent — plates move apart |
| 7 | Transform — plates slide past each other |
| 8 | Convergent (subduction) — one plate dives under another |
| 9 | Convergent (collision) — two continents collide |
---
✔ You now have all the answers to complete your worksheet!
If you can describe the diagrams (e.g., “two plates pulling apart,” “one plate going under another”), I can give even more precise labels. But based on standard curriculum materials, this is the correct solution.
Let me know if you want help drawing or labeling them! 🌍📚
Parent Tip: Review the logic above to help your child master the concept of theory of plate tectonics worksheet.
