MEDIUM
8th CBSE
IMPORTANT
Earn 100
Richter scale measures the strength of earthquakes.
Richter scale measurement of the earthquake
Example of damages due to the earthquake
3.0 - 3.9
No damages but some vibrations felt
4.0 - 4.9
Cracks in windows, some unstable objects fall
5.0 - 5.9
Building walls may collapse, movement of furniture
6.0 - 6.9
Building roofs may collapse, loss of few lives
7.0 - 7.9
Cracks on ground, underground pipes broken, loss of many lives
The damages from an earthquake are listed below.
- 2 people died
- 5 building roofs collapsed
- 12 building walls collapsed
What could be the likely reading on the Richter scale for the earthquake?
100% studentsanswered this correctly
Important Questions on Some Natural Phenomena
EASY
8th CBSE
IMPORTANT
Which of these statements is true about earthquakes?
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.
