Some Natural Ph...

Raju rubbed a pen refill 'A' with polythene and placed it in a glass tumbler. He rubbed another pen refill 'B' with polythene and brought it close to that charged refill in the tumbler. What effect will be observed?

Read the following passage and fill in the blanks.

Earthquakes are caused because of the motion of the ___i___ plates in the outer crust of the Earth. The intensity of tremors is highest near the ___ii____. The place below the Earth's surface from where the earthquake originates is called ____iii____. It is often several kilometres below the Earth's surface.

Earthquake intensity is measured with the help of a

Read the following statements (A and B) and select the correct option.

Statement A: P waves are compressional waves which move the material in the same direction as wave movement.
Statement B: S waves are shear waves and move the material perpendicular to wave movement.

 Read the following statements (A and B) and select the correct option.

Statement A: Earthquake prone areas are the ones which are near the equator.
Statement B: Earthquakes occur when the temperature becomes very high.

Read the following statements (A and B) and select the correct option.

Statement A: Roof of the buildings in seismic zones should be light.
Statement B: During the earthquake, if the structure falls, the damage will not be heavy.

Choose the correct statement(s):

During an earthquake, if you are outdoors, then

A. find a clear spot, away from buildings, trees and overhead power lines; and drop to the ground
B. take shelter under a nearby tree
C. get into the car and drive away fast

How do rock particles move during the passage of a P wave through the rock?