Solved ACTIVITY • Plate Tectonics 12 Movement of | Chegg.com - Free Printable

To solve the problem, we need to match the terms provided with the labeled parts of the diagram. The diagram illustrates the movement and interactions of lithospheric plates, including processes such as subduction, divergence, and convergence. Let's analyze each part step by step:

Key Concepts:

1. Divergent Boundary: Plates move apart, creating a mid-ocean ridge or rift valley.
2. Convergent Boundary: Plates move toward each other, leading to subduction (oceanic plate sinking beneath another plate) or collision (forming mountain ranges).
3. Transform Boundary: Plates slide past each other horizontally.

Terms Provided:

- rift valley: Forms at divergent boundaries on continents.
- trench: Deep oceanic trench formed where one plate subducts beneath another.
- mountain range: Forms at convergent boundaries when two continental plates collide.
- "conveyor belts": Refers to the movement of lithospheric plates.
- ocean floor: The seafloor between continents.
- continent: A large landmass.
- lithospheric plate: The rigid outer layer of the Earth, consisting of the crust and upper mantle.
- mid-ocean ridge: A chain of underwater mountains formed at divergent boundaries.
- new ocean floor: Formed as partially molten rock rises at a divergent boundary.
- mantle: The layer of the Earth below the crust.
- old ocean floor becomes partially molten rock: Occurs during subduction, where the oceanic crust melts as it descends into the mantle.

Diagram Analysis:

The diagram shows various features related to plate tectonics. Let's label each part based on the given terms:

#### Left Side (Subduction Zone):
- a: This is the deep oceanic trench where one plate subducts beneath another.
Label: trench
- b: This is the old ocean floor that is being subducted and melting in the mantle.
Label: old ocean floor becomes partially molten rock
- c: This is the subducting oceanic plate.
Label: lithospheric plate

#### Center (Mid-Ocean Ridge):
- d: This is the mid-ocean ridge where new oceanic crust is forming.
Label: mid-ocean ridge
- e: This is the new ocean floor being created as partially molten rock rises.
Label: new ocean floor
- f: This is the mantle from which partially molten rock rises.
Label: mantle

#### Right Side (Continental Collision):
- g: This is the continent colliding with another plate.
Label: continent
- h: This is the mountain range formed due to the collision of two continental plates.
Label: mountain range
- i: This is the lithospheric plate involved in the collision.
Label: lithospheric plate
- j: This is the ocean floor adjacent to the continent.
Label: ocean floor
- k: This is the lithospheric plate moving away from the mid-ocean ridge.
Label: lithospheric plate
- l: This is the "conveyor belt" movement of the lithospheric plates.
Label: "conveyor belts"
- m: This is the rift valley forming on the continent due to divergence.
Label: rift valley
- n: This is the ocean floor separating the diverging plates.
Label: ocean floor

Final Labels:

- a: trench
- b: old ocean floor becomes partially molten rock
- c: lithospheric plate
- d: mid-ocean ridge
- e: new ocean floor
- f: mantle
- g: continent
- h: mountain range
- i: lithospheric plate
- j: ocean floor
- k: lithospheric plate
- l: "conveyor belts"
- m: rift valley
- n: ocean floor

Final Answer:

\[
\boxed{
\begin{array}{ll}
a & \text{trench} \\
b & \text{old ocean floor becomes partially molten rock} \\
c & \text{lithospheric plate} \\
d & \text{mid-ocean ridge} \\
e & \text{new ocean floor} \\
f & \text{mantle} \\
g & \text{continent} \\
h & \text{mountain range} \\
i & \text{lithospheric plate} \\
j & \text{ocean floor} \\
k & \text{lithospheric plate} \\
l & \text{"conveyor belts"} \\
m & \text{rift valley} \\
n & \text{ocean floor} \\
\end{array}
}
\]