The image is an educational diagram titled
"Earthquake Cross-Section", which shows a simplified cross-sectional view of the Earth during an earthquake. The task involves labeling different parts of the earthquake using the provided terms:
Terms to label:
- Earth’s crust
- Epicentre
- Hypocentre
- Fault line
- Tectonic plate
Let’s analyze the diagram and match each term to its correct location.
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🔍 Step-by-step Explanation:
1.
Hypocentre (Focus):
- This is the
point inside the Earth where the earthquake starts.
- It is located
deep within the crust, at the origin of the seismic waves.
- In the diagram, there's a
red circle underground showing the origin of the shaking — this is the
hypocentre.
-
✔ So, the
bottom-left box (directly below the red circle) should be labeled
"hypocentre".
2.
Epicentre:
- This is the point on the
Earth's surface directly above the hypocentre.
- In the diagram, the
center of the concentric circles on the ground (where the ripples start) marks the epicentre.
-
✔ The
top-left box (on the surface, centered over the red area) should be labeled
"epicentre".
3.
Earth’s Crust:
- This is the
outermost solid layer of the Earth, where the land, trees, and buildings are located.
- In the diagram, it's the
upper green and brown layer above the fault line.
-
✔ The
left side of the diagram, just above the fault line, should be labeled
"earth's crust".
4.
Fault Line:
- A fracture in the Earth’s crust where movement occurs during an earthquake.
- In the diagram, there's a
vertical break in the rock layers beneath the surface, with arrows indicating movement.
-
✔ The
horizontal line cutting through the crust (the crack) should be labeled
"fault line".
5.
Tectonic Plate:
- These are large pieces of the Earth’s lithosphere that move slowly over time.
- In the diagram, the
entire block of rock beneath the surface (including the crust and upper mantle) represents a tectonic plate.
-
✔ The
right-side box (showing the larger slab of rock) should be labeled
"tectonic plate".
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✔ Final Labeling:
Here’s how the boxes should be filled:
| Box Position | Correct Label |
|--------------|-----------------------|
| Top-left |
Epicentre |
| Middle-left |
Earth’s crust |
| Bottom-left |
Hypocentre |
| Right-top |
Tectonic plate |
| Right-middle |
Fault line |
> Note: There are five labels and five boxes. The "fault line" is shown as a line across the crust, so it goes in the middle-right box.
---
🧠 Summary:
-
Hypocentre: Origin of earthquake underground.
-
Epicentre: Point on surface directly above hypocentre.
-
Fault line: Crack where plates move.
-
Earth’s crust: Outer layer of Earth.
-
Tectonic plate: Large section of the Earth’s lithosphere.
This activity helps students visualize how earthquakes originate and propagate through the Earth.
✔ Answer:
Label the boxes as follows:
1. Top-left:
Epicentre
2. Middle-left:
Earth’s crust
3. Bottom-left:
Hypocentre
4. Right-top:
Tectonic plate
5. Right-middle:
Fault line
Parent Tip: Review the logic above to help your child master the concept of worksheet on earthquakes.
