Question

Choose the appropriate word which best expresses the given sentence/phrase:
'An instrument which records earth's tremor'

• A. Monograph
• B. Geographer
• C. Seismograph
• D. Barometer

Hint:

Look at the root words to decode unfamiliar terms:
"Seismo-" is a prefix derived from Greek, referring to earthquakes or vibrations.
"-graph" represents a recording or writing device.
Combining these yields "Seismograph", the instrument that records tremors.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question is a standard one-word substitution from English vocabulary.
It asks for the specific scientific term used to describe an instrument that detects and records the vibrations, tremors, or seismic waves produced by an earthquake.

Step 2: Detailed Explanation:

• Seismograph (Correct Option): A seismograph is an instrument that detects and records ground motion caused by earthquakes, volcanic eruptions, and other seismic sources. The word comes from the Greek words "seismos" meaning earthquake and "grapho" meaning to write. It consists of a sensor (seismometer) and a recording system.

• Monograph: A monograph is a detailed written study, specialist work, or book on a single specialized subject or an aspect of it, usually written by a single author. It has no connection to geographical or geological measurements.

• Geographer: A geographer is a scholar or scientist whose area of study is geography, the study of Earth's natural environment and human society. This is a profession, not an measuring instrument.

• Barometer: A barometer is a scientific instrument used to measure atmospheric pressure, which is crucial for forecasting weather changes. It does not measure tectonic or seismic movements.

Step 3: Final Answer:
Based on the definitions of the options, the instrument that records earth's tremors is a seismograph.
Therefore, the correct choice is option (C).