tectonic plate boundaries and forces worksheet - Free Printable

The task involves filling out a table about different types of plate boundaries, including their movements, what can happen at these boundaries, and the forces involved. Below is the completed table with explanations for each type of boundary:

Completed Table

| Type of Boundary | Plate Movement Image | What can happen there? | Force |
|-------------------------------|-----------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------|-------------------------------|
| Convergent (continental-continental) | Two continental plates collide, pushing against each other. No subduction occurs. | Mountain ranges form (e.g., Himalayas). Crust thickens due to compression. | Compressional force |
| Convergent (continental-oceanic) | Oceanic crust subducts beneath continental crust into the mantle. | Volcanic arcs or island arcs form above the subduction zone. Earthquakes occur. | Compressional force |
| Divergent | Plates move apart from each other. Magma rises to fill the gap, forming new crust. | Mid-ocean ridges or rift valleys form. Volcanic activity may occur. | Tensional force |
| Transform | Plates slide past each other horizontally. | Fault lines develop. Earthquakes are common along transform boundaries. | Shear force |

---

Explanation of Each Type of Boundary

1. Convergent (Continental-Continental):
- Plate Movement: When two continental plates converge, they push against each other. Since neither plate is denser than the other, subduction does not occur. Instead, the crust buckles and thickens.
- What Happens: This results in the formation of mountain ranges. A classic example is the Himalayas, which formed as the Indian Plate collided with the Eurasian Plate.
- Force: The primary force is compressional, as the plates push together.

2. Convergent (Continental-Oceanic):
- Plate Movement: When a continental plate converges with an oceanic plate, the denser oceanic crust subducts beneath the less dense continental crust into the mantle. This process is called subduction.
- What Happens: Above the subduction zone, volcanic arcs or island arcs form due to melting of the subducted oceanic crust. Earthquakes are also common in this region.
- Force: The primary force is compressional, as the plates push together, causing one plate to sink beneath the other.

3. Divergent:
- Plate Movement: At divergent boundaries, plates move away from each other. As the plates separate, magma rises to fill the gap, creating new crust.
- What Happens: This process often leads to the formation of mid-ocean ridges (e.g., the Mid-Atlantic Ridge) or rift valleys (e.g., the East African Rift). Volcanic activity is common in these areas.
- Force: The primary force is tensional, as the plates pull apart from each other.

4. Transform:
- Plate Movement: At transform boundaries, plates slide past each other horizontally. There is no creation or destruction of crust here.
- What Happens: Transform boundaries are marked by fault lines, such as the San Andreas Fault in California. Earthquakes are frequent along these boundaries due to the friction between the sliding plates.
- Force: The primary force is shear force, as the plates move laterally past each other.

---

Final Answer:

\boxed{
\begin{array}{|c|c|c|c|}
\hline
\textbf{Type of Boundary} & \textbf{Plate Movement Image} & \textbf{What can happen there?} & \textbf{Force} \\
\hline
\text{Convergent (continental-continental)} & \text{Two continental plates collide, pushing against each other. No subduction occurs.} & \text{Mountain ranges form (e.g., Himalayas). Crust thickens due to compression.} & \text{Compressional force} \\
\hline
\text{Convergent (continental-oceanic)} & \text{Oceanic crust subducts beneath continental crust into the mantle.} & \text{Volcanic arcs or island arcs form above the subduction zone. Earthquakes occur.} & \text{Compressional force} \\
\hline
\text{Divergent} & \text{Plates move apart from each other. Magma rises to fill the gap, forming new crust.} & \text{Mid-ocean ridges or rift valleys form. Volcanic activity may occur.} & \text{Tensional force} \\
\hline
\text{Transform} & \text{Plates slide past each other horizontally.} & \text{Fault lines develop. Earthquakes are common along transform boundaries.} & \text{Shear force} \\
\hline
\end{array}
}