Final Answer:
Task 1:
Richter Scale → The scale on which the strength of the earthquake is measured
Magnitude → How strong an earthquake is
Focus → The place in the earth where rocks are moving
Epicentre → The point at the surface above the focus
After-shock → Smaller earthquakes after the main, large one
Seismometer → An instrument to measure the strength of the earthquake
Task 2:
1. B
2. C
3. E
4. A
5. D
Task 3A:
The earthquake would be felt most strongly in the town because it is closer to the epicentre (the point on the surface directly above where the earthquake starts), and shaking is strongest near the epicentre. The forest is farther away, so the shaking would be weaker there.
Task 3B:
If the focus were deeper in the crust, the earthquake’s effects at the surface would be weaker and spread over a larger area. Shaking would be less intense in any one place because the energy has to travel farther through rock, which absorbs some of it. A shallow focus causes stronger, more damaging shaking right above it.
Parent Tip: Review the logic above to help your child master the concept of worksheet on earthquakes.
