which statements about this diagram are true? check all that apply.
☐ layers 5 and 7 are the same age.
☐ faulting created the differences in layers.
☐ erosion created the differences in layers.
☐ layers 2 and 9 are the same age.
☐ the organisms in 1 and 8 lived tens of millions of years apart.

Question

Accepted Answer

# Brief Explanations:
1. **Layers 5 and 7**: In geological stratigraphy, layers on either side of a fault (if this is a faulted diagram) – but actually, using the principle of original horizontality and correlation, layers 5 and 7 are not the same age. Wait, no, looking at the diagram, the left and right sides: layer 2 and 9 have the same fossil (the shell), so they are same age (principle of fossil correlation). Layer 5 and 7: no, wait, the fault? Wait, the differences are due to faulting (a fault has displaced the layers). Erosion? No, the displacement is faulting. Layers 2 and 9: same fossil, so same age (fossil correlation). Organisms in 1 (a worm - like) and 8 (same worm - like? Wait, no, 1 and 8: if 2 and 9 are same age, 1 is above 2, 8 is above 9, so 1 and 8: how much time? Wait, no, let's re - analyze:

- **Faulting created the differences**: The diagram shows a displaced layer (a fault line), so the differences in layer positions are due to faulting (movement along a fault), so this is true.
   - **Layers 2 and 9**: They have the same fossil (the shell - shaped organism), so by the principle of fossil correlation, they are the same age. This is true.
   - **Organisms in 1 and 8**: Layer 1 is above layer 2, layer 8 is above layer 9. Since 2 and 9 are same age, 1 and 8 are in layers above same - age layers. But the organisms: 1 has a worm - like, 8 has the same worm - like? Wait, no, maybe the time between 1 and 8: if the layers above same - age layers, but maybe the organisms in 1 and 8: no, wait, maybe I got it wrong. Wait, the first statement: Layers 5 and 7: no, 5 is below 4, 7 is above 8? Wait, no, the left column: 1 (top), 2, 3, 4, 5 (bottom). Right column: 6 (top), 7, 8, 9, 10 (bottom). The fault is at an angle, so layer 2 (left) correlates with layer 9 (right) (same fossil), layer 3 (left) with 10 (right) (same shell - like but different? Wait, no, 3 has a conch, 10 has a similar conch? Wait, 2 and 9 have the same shell. So layers 2 and 9 are same age (fossil correlation). Faulting: the displacement is due to faulting, so faulting created the differences. Erosion? No, the layers are displaced, not eroded (erosion would be a missing layer, but here it's a fault). Layers 5 and 7: 5 is at the bottom left, 7 is above 8 on the right. Not same age. Organisms in 1 and 8: 1 is above 2, 8 is above 9. Since 2 and 9 are same age, 1 and 8 are in overlying layers. If the organisms in 1 and 8 are the same type, but maybe the time between them: no, wait, maybe the organisms in 1 and 8: if 2 and 9 are same age, then 1 is younger than 2, 8 is younger than 9, so 1 and 8 are about the same age? Wait, I think I made a mistake earlier. Let's correct:

- **Faulting created the differences**: The diagram shows a fault (a break in the rock layers with displacement), so the differences in layer positions are due to faulting. This is true.
   - **Layers 2 and 9**: Same fossil, so same age (principle of biostratigraphic correlation). This is true.
   - **Organisms in 1 and 8**: Layer 1 is above layer 2, layer 8 is above layer 9. Since 2 and 9 are same age, 1 and 8 are in layers that are above same - age layers. If the organisms in 1 and 8 are the same (the worm - like), then they would be about the same age, so the statement "The organisms in 1 and 8 lived tens of millions of years apart" is false.
   - **Layers 5 and 7**: 5 is at the bottom left, 7 is in the middle right. Not same age.
   - **Erosion created the differences**: No, the differences are due to faulting, not erosion (erosion would be a surface with missing layers, not a displaced fault).

So the true statements are "Faulting created the differences in layers" and "Layers 2 and 9 are the same age". Wait, but let's check again. The diagram: left side layers 1 - 5, right side 6 - 10, with a fault (the diagonal line) that displaces the layers. So layer 2 (left) matches layer 9 (right) in fossil, so same age. Layer 3 (left) matches 10 (right). The movement along the fault (faulting) caused the displacement, so faulting created the differences. Erosion: no, there's no eroded surface (like an unconformity) shown. Layers 5 and 7: 5 is below 4, 7 is above 8. 4 and 7: 4 has the same fossil as 7? Wait, 4 (left) has the seed - like, 7 (right) has the seed - like? Wait, 4 and 7: same fossil? Then 5 and 8? No, maybe I misread the fossils. Let's re - examine the fossils:

- Layer 1 (left): worm - like.
   - Layer 2 (left): shell.
   - Layer 3 (left): conch.
   - Layer 4 (left): seed - like.
   - Layer 5 (left): plain.
   - Layer 6 (right): plain.
   - Layer 7 (right): seed - like.
   - Layer 8 (right): worm - like.
   - Layer 9 (right): shell.
   - Layer 10 (right): conch.

Ah! Now I see. So layer 1 (worm) and layer 8 (worm) – same fossil. Layer 2 (shell) and layer 9 (shell) – same fossil. Layer 3 (conch) and layer 10 (conch) – same fossil. Layer 4 (seed) and layer 7 (seed) – same fossil. So:

- Layers 5 and 7: 5 is below 4, 7 is above 8. 4 and 7 have same fossil, so 5 is older than 4, 7 is younger than 8? Wait, no, in stratigraphy, older layers are below younger ones (principle of superposition), unless faulted. The fault here is a normal fault? Wait, the left side is displaced down? So layer 4 (left) is at the same level as layer 7 (right) (same fossil), layer 2 (left) same as layer 9 (right), layer 1 (left) same as layer 8 (right), layer 3 (left) same as layer 10 (right). So:

- **Layers 5 and 7**: 5 is below 4, 7 is above 8. 4 and 7 are same age (same fossil), so 5 is older than 4, 7 is younger than 8? No, wait, the fault has displaced the layers, so the correlation is: layer 1 (left) ↔ layer 8 (right), layer 2 (left) ↔ layer 9 (right), layer 3 (left) ↔ layer 10 (right), layer 4 (left) ↔ layer 7 (right), layer 5 (left) ↔ layer 6 (right). So layer 5 (left) and layer 6 (right) are same age, layer 4 and 7 same age, layer 2 and 9 same age, layer 1 and 8 same age, layer 3 and 10 same age. So "Layers 5 and 7 are the same age" is false (5 ↔ 6, 4 ↔ 7). "Faulting created the differences": yes, because the layers are displaced due to faulting. "Erosion created the differences": no, it's faulting. "Layers 2 and 9 are the same age": yes, because they have the same fossil (correlation). "The organisms in 1 and 8 lived tens of millions of years apart": no, because 1 and 8 have the same fossil, so they are same age (or close in time). Wait, now I'm confused. Let's use the principles:

- **Principle of Superposition**: In undisturbed layers, older is below younger. But here, there's a fault, so the layers are displaced.
   - **Principle of Fossil Correlation**: Layers with the same fossils are the same age (or close in time).

So layer 2 (left) has the same shell as layer 9 (right) → same age. Layer 1 (left) has same worm as layer 8 (right) → same age. Layer 4 (left) has same seed as layer 7 (right) → same age. Layer 3 (left) has same conch as layer 10 (right) → same age. Layer 5 (left) and layer 6 (right) are the bottom layers, same age.

So:

- "Layers 5 and 7 are the same age": 5 ↔ 6, 7 ↔ 4 → false.
   - "Faulting created the differences": The displacement of layers (left and right not aligned) is due to faulting (movement along a fault) → true.
   - "Erosion created the differences": No, no eroded surface (unconformity) shown, just fault displacement → false.
   - "Layers 2 and 9 are the same age": Same fossil → true.
   - "The organisms in 1 and 8 lived tens of millions of years apart": Same fossil → same age (or close), so false.

Wait, but maybe the fault is a strike - slip fault? No, the layers are offset vertically. So the correct true statements are "Faulting created the differences in layers" and "Layers 2 and 9 are the same age". Also, wait, layer 1 and 8: same fossil, so they are same age, so the statement about them being tens of millions apart is false. Layers 5 and 7: 5 is below 4, 7 is above 8. 4 and 7 are same age, so 5 is older than 4, 7 is younger than 8? No, 4 and 7 are same age (same fossil), so 5 is older than 4 (superposition, since 5 is below 4), and 7 is same as 4, so 5 is older than 7. So layers 5 and 7 are not same age.

So the true statements are:

- Faulting created the differences in layers.
   - Layers 2 and 9 are the same age.

# Answer:
- Faulting created the differences in layers.
- Layers 2 and 9 are the same age.

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Answer: