📚 Topic Summary
A seismograph is an instrument used to detect and record earthquakes. It works by measuring the ground motion caused by seismic waves. Modern seismographs often convert this motion into an electrical signal, which is then recorded digitally. Understanding the different parts of a seismograph is crucial to interpreting earthquake data. 🌎
📝 Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. Seismogram |
A. The weight that remains still due to inertia |
| 2. Inertia |
B. The record of ground motion produced by a seismograph |
| 3. Seismic Waves |
C. Resistance of an object to changes in its state of motion |
| 4. Bedrock |
D. Vibrations that travel through Earth carrying the energy released during an earthquake |
| 5. Mass |
E. The solid rock beneath loose materials like soil |
✍️ Part B: Fill in the Blanks
Complete the following paragraph using the words: pen, drum, earthquakes, seismograph, ground.
A ___________ is an instrument that records __________. It measures the movement of the __________. A rotating __________ with paper attached is connected to the __________. As the ground shakes, the pen records the motion, producing a seismogram.
🤔 Part C: Critical Thinking
If a seismograph recorded very small vibrations even when no earthquakes were reported, what could be some possible explanations for these vibrations? 🧐