Name the instrument which records seismic waves.

Options

A. Telegraph
B. Photograph
C. Seismograph
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Seismic Waves**: Seismic waves are vibrations that travel through the Earth, typically caused by geological events such as earthquakes, volcanic eruptions, or underground explosions.

2. **Identifying the Need for Measurement**: Since seismic waves can indicate the occurrence of significant geological events, it is important to measure and record these waves to understand their characteristics and effects.

3. **Finding the Right Instrument**: The instrument specifically designed to detect and record seismic waves is essential for this purpose.

4. **Naming the Instrument**: The instrument that records seismic waves is called a **seismograph**.

5. **Conclusion**: Therefore, the answer to the question is that the instrument which records seismic waves is the **seismograph**.

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