Solved Plate Boundaries Worksheet Name The crust of the | Chegg.com - Free Printable

Problem Overview:

The task involves identifying and labeling the types of plate boundaries in a provided diagram and completing a chart that describes the characteristics of each type of boundary (convergent, divergent, and transform). Additionally, the student is asked to draw convection currents to explain the hot spot and divergent boundary.

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Step-by-Step Solution:

#### 1. Labeling the Plate Boundaries:
The diagram shows three types of plate boundaries. Let's identify them based on their characteristics:

- Left Diagram: This shows two plates moving toward each other. The crust is being pushed upward, forming mountains or subducting one plate beneath the other. This is a Convergent Plate Boundary.
- Middle Diagram: This shows two plates sliding past each other horizontally. There is no significant vertical movement, but friction causes earthquakes along the fault line. This is a Transform Plate Boundary.
- Right Diagram: This shows two plates moving away from each other. Magma rises from the mantle to fill the gap, creating new crust. This is a Divergent Plate Boundary.

So, the labels for the diagrams are:
- Left: Convergent
- Middle: Transform
- Right: Divergent

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#### 2. Completing the Chart:

The chart requires information about motion, effect, topography, volcanic activity, earthquake activity, and examples of each type of boundary. Let’s fill it out step by step.

##### Convergent Plate Boundary:
- Motion: Two plates move toward each other.
- Effect: Constructive (forming mountains) or destructive (subduction).
- Topography: On land, you see mountain ranges (e.g., Himalayas). In the ocean, you see trenches (e.g., Mariana Trench).
- Volcanic Activity: Yes (due to melting of the subducted plate).
- Earthquake Activity: Yes (due to friction and pressure).
- Examples: Himalayas (India-Eurasia), Andes (Nazca-South America).

##### Divergent Plate Boundary:
- Motion: Two plates move away from each other.
- Effect: Constructive (new crust forms).
- Topography: On land, you see rift valleys (e.g., East African Rift). In the ocean, you see mid-ocean ridges (e.g., Mid-Atlantic Ridge).
- Volcanic Activity: Yes (magma rises to the surface).
- Earthquake Activity: Yes (due to tensional forces).
- Examples: Mid-Atlantic Ridge, East African Rift.

##### Transform Plate Boundary:
- Motion: Two plates slide past each other horizontally.
- Effect: Neither constructive nor destructive; primarily lateral movement.
- Topography: Usually no visible landforms, but sometimes faults can be seen. In the ocean, you don’t really “see” a fault line.
- Volcanic Activity: No (no magma rising).
- Earthquake Activity: Yes (due to friction along the fault).
- Examples: San Andreas Fault (Pacific-North American), Alpine Fault (Australia-Pacific).

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#### 3. Drawing Convection Currents:
Convection currents in the mantle drive plate tectonics. To explain the hot spot and divergent boundary:

- Hot Spot: A hot spot is caused by a stationary plume of hot mantle material rising through the lithosphere. This creates a persistent source of heat and magma, leading to volcanic activity over time as the plate moves over the hot spot.
- Divergent Boundary: At a divergent boundary, convection currents cause the mantle material to rise and spread apart, pulling the overlying crust with it. This leads to the formation of new crust as magma fills the gap.

To illustrate this:
- Draw arrows in the mantle layer showing upward flow at the hot spot and divergent boundary.
- Show how the rising mantle material pushes the plates apart at the divergent boundary.
- Indicate the direction of plate movement relative to the hot spot.

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Final Answer:

#### Labels for the Diagrams:
- Left: Convergent
- Middle: Transform
- Right: Divergent

#### Completed Chart:
| Motion (Describe the motion of one plate relative to another) | Effect (Is it constructive or destructive or more of the adjacent plates?) | Topography (What are the landforms that are associated with this type of margin?) | Volcanic Activity? (Yes/No) | Earthquake Activity? (Yes/No) | Use your plate map to identify 2 places in the world with this type of plate boundary/margin |
|-------------------------------------------------------------|--------------------------------------------------------------------------|------------------------------------------------------------------------------------|-----------------------------|-------------------------------|--------------------------------------------------------------------------------|
| Convergent | Constructive or Destructive | On land: Mountain ranges (e.g., Himalayas)<br>In the ocean: Trenches (e.g., Mariana Trench) | Yes | Yes | Himalayas (India-Eurasia), Andes (Nazca-South America) |
| Divergent | Constructive | On land: Rift valleys (e.g., East African Rift)<br>In the ocean: Mid-ocean ridges (e.g., Mid-Atlantic Ridge) | Yes | Yes | Mid-Atlantic Ridge, East African Rift |
| Transform | Neither constructive nor destructive | Usually no visible landforms<br>Sometimes faults can be seen | No | Yes | San Andreas Fault (Pacific-North American), Alpine Fault (Australia-Pacific) |

#### Drawing Convection Currents:
- Arrows should show upward flow at the hot spot and divergent boundary.
- Arrows should indicate the spreading of the mantle material at the divergent boundary.
- Arrows should show the direction of plate movement relative to the hot spot.

Final Answer Boxed:
$$
\boxed{\text{See explanations above for labels, chart completion, and convection current drawing.}}
$$