EASY
8th CBSE
IMPORTANT
Earn 100
Which of these statements is true about earthquakes?
73.81% studentsanswered this correctly
Important Questions on Some Natural Phenomena
HARD
8th CBSE
IMPORTANT
In the following diagram, amber and fur are rubbed together resulting in a negatively charged amber and positively charged fur.
During the process of charging the fur,
HARD
8th CBSE
IMPORTANT
The figure shows a person holding a polythene strip after it has been rubbed with a duster cloth. The strip acquires a negative charge. Yet, after a few seconds, the duster cloth does not show any charge. Which of the following could be the reason for this?
MEDIUM
8th CBSE
IMPORTANT
Calculate the number of electrons in of charge.
MEDIUM
8th CBSE
IMPORTANT
What is the difference between earthquakes and aftershocks? Do aftershocks pose any threat?
MEDIUM
8th CBSE
IMPORTANT
An earthquake measuring on the Richter scale has more seismic energy than another of magnitude by______.
MEDIUM
8th CBSE
IMPORTANT
Earthquakes occur near cracks in the Earth's crust.
MEDIUM
8th CBSE
IMPORTANT
If the metal clip used in the electroscope is replaced by an ebonite rod and a charged body is brought in contact with it, will there be any effect on the aluminium strips? Explain.
HARD
8th CBSE
IMPORTANT
Raghvan found a metallic rod AB and a glass rod CD both positively charged and placed on an insulating table. He wanted to know what would happen to the charges on AB and CD if he touched both the rods at A and C? Discuss.
