Question

sea-floor spreading
mid-ocean ridge
pangaea
continental drift
rift valley

hypothesis that continents were once joined and then broke apart
process by which new oceanic lithosphere forms
single landmass once formed by the continents
the break in the earth’s crust located in the middle of the ridge
undersea mountain range

Explanation:

To solve this matching problem related to geological concepts, we analyze each row:

1. Hypothesis that continents were once joined and then broke apart

This describes the Continental drift hypothesis (the idea that continents were once a single landmass and moved apart).

2. Process by which new oceanic lithosphere forms

This is Sea - floor spreading (the process where new oceanic crust is formed at mid - ocean ridges as tectonic plates move apart).

3. Single landmass once formed by the continents

This is Pangaea (the supercontinent that existed when all major landmasses were joined together).

4. The break in the earth’s crust located in the middle of the ridge

This is a Rift valley (a linear depression formed by the stretching and breaking of the Earth's crust, often found at mid - ocean ridges or on land).

5. Undersea mountain range

This is the Mid - ocean ridge (a continuous mountain range on the ocean floor formed by sea - floor spreading).

Final Matches:

• Hypothesis that continents were once joined and then broke apart: Continental drift
• Process by which new oceanic lithosphere forms: Sea - floor spreading
• Single landmass once formed by the continents: Pangaea
• The break in the earth’s crust located in the middle of the ridge: Rift valley
• Undersea mountain range: Mid - ocean ridge

(If we were to present the answers in the order of the columns from left to right for the matching:

1. Continental drift
2. Sea - floor spreading
3. Pangaea
4. Rift valley
5. Mid - ocean ridge)

Answer:

To solve this matching problem related to geological concepts, we analyze each row:

1. Hypothesis that continents were once joined and then broke apart

This describes the Continental drift hypothesis (the idea that continents were once a single landmass and moved apart).

2. Process by which new oceanic lithosphere forms

This is Sea - floor spreading (the process where new oceanic crust is formed at mid - ocean ridges as tectonic plates move apart).

3. Single landmass once formed by the continents

This is Pangaea (the supercontinent that existed when all major landmasses were joined together).

4. The break in the earth’s crust located in the middle of the ridge

This is a Rift valley (a linear depression formed by the stretching and breaking of the Earth's crust, often found at mid - ocean ridges or on land).

5. Undersea mountain range

This is the Mid - ocean ridge (a continuous mountain range on the ocean floor formed by sea - floor spreading).

Final Matches:

• Hypothesis that continents were once joined and then broke apart: Continental drift
• Process by which new oceanic lithosphere forms: Sea - floor spreading
• Single landmass once formed by the continents: Pangaea
• The break in the earth’s crust located in the middle of the ridge: Rift valley
• Undersea mountain range: Mid - ocean ridge

(If we were to present the answers in the order of the columns from left to right for the matching:

1. Continental drift
2. Sea - floor spreading
3. Pangaea
4. Rift valley
5. Mid - ocean ridge)