VII: Earthquake: Some Natural Phenomenon

Q. Fill in the blanks

(a) The intensity of an earthquake is measure on the ------------- ------------------

Ans: Richter scale

(b)------------- is a huge wave due to anearthquake occurring under the sea floor.

Ans: Tsunami

Ans: Tectonic

(d) Shock wave of earthquake are called --------------

Ans Seismic wave

(e) An earthquake of magnitude 2-4 on Richter scale is a --------------- one

Ans: weaker

(f) An earthquake of magnitude 8 or more on Richter scale is a --------------- one

Ans: stronger

(g)The instrument used to measure earthquake wave is called --------------.

Ans: seismograph

(i)The intensity of tremors is highest near the -------------

Ans: fault zone or epicenter

(j) The intensity of tremors ----------- with distance from the epicenter.

Ans: Spread

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