Earthquakes

Q.

What is the focus of an earthquake?

Q.

Difference between focus and epicentre

Q. Which instrument is used to measure an earthquake?

1. Thermometer
2. Sphygmomanometer
3. Seismograph
4. Barometer

Q.

What are Pseudofossils?

Q. The point of origin of an earthquake on the Earth's surface is called ______.

1. Focus
2. Epicenter
3. Fault
4. Fracture point

Q. The earthquakes above ______ on Richter scale are considered as major earthquakes.

1. Seven
2. Two
3. Three
4. Five

Q.

Is there any relation between dam and earthquake? Explain.

Q.

Difference between volcano and earthquake.

Q. An earthquake is a sudden shaking of the earth as a result of the movements of lithospheric plates. Earthquakes have a point of origin called the ____.

1. focus
2. fault
3. fracture point
4. epicenter

Q. The point on the surface of earth vertically above the place of origin (hypocentre) of an earthquake is called a/an _______________.

1. focus
2. epicenter
3. fault
4. focal point

Q. What is a seismograph used for?

1. To completely stop an earthquake.
2. To count the number of buildings collapsed.
3. To measure the magnitude of an earthquake.
4. To alert people about an earthquake.

Q. A(n) __________ is a sudden shaking of the earth as a result of the movements of lithospheric plates.

1. earthquake
2. flood
3. drought
4. volcano

Q. ______ is used to measure the magnitude of the earthquakes.

1. Time scale
2. Wooden scale
3. Distance scale
4. Richter scale

Q. Which of the following steps can you take if an earthquake occurs in your area and you are inside your home?

1. Stay away from objects that can fall and break.
2. Cover the heads.
3. Drop under a table.
4. Go outside for help.

Q. The ____ of Earth is broken into multiple tectonic plates that float around on the molten mantle underneath.

1. atmosphere
2. lithosphere
3. hydrosphere
4. biosphere

Q. The Richter Scale is graded from 1 to ____.

1. 10
2. 9
3. 8
4. 6

Q.

How is the power of an earthquake is estimated? At what strength it becomes destructive?

Q. The ____ is broken into multiple plates that float around on the molten mantle underneath. These plates are called tectonic plates.

1. atmosphere
2. hydrosphere
3. biosphere
4. lithosphere

Q. Earthquakes have a point of origin called the ____.

1. Focus
2. Epicenter
3. Fault
4. Fracture point

Q. The most common scale used to measure the magnitude of an earthquake is the
(a) seismic zone
(b) fault zone
(c) seismograph
(d) Richter scale

Q. The point inside the earth right under the epicentre is called _____.

1. Focus
2. Epicenter
3. Fault
4. Fracture point

Q. The point inside the earth right under the epicentre is called the _______.

1. fault
2. incentre
3. focus
4. fault scarp

Q. An __________ is a sudden shaking of the earth as a result of the movements of lithospheric plates.

1. earthquake
2. volcanoes
3. flood
4. drought

Q. An earthquake is a sudden shaking of the earth as a result of the movements of lithospheric plates. Earthquakes have a point of origin called the ____.

1. Focus
2. Epicenter
3. Fault
4. Fracture point

Q.

Define the following :

(i) Focus (ii) Epicentre (iii) Seismology (iv) Anticline (v) Syncline.

Q. The Richter Scale is a measure that is used to calculate the magnitude of an earthquake.

1. True
2. False

Q. What was the measurement of intensity of earthquake occurred in Bhuj on Richter scale:

1. 5 to 6
2. 6 to 7
3. 7 to 8
4. 8 to 9

Q. Raman wants to purchase a house in a country. He has to choose a place among four countries. The seismographic readings of four countries are given below. Among the given countries, which country offers the safest option?

1. 
2. 
3. 
4. 

Q. Name
(a) The scale used to measure the power of an earthquake.
(b) An instrument which can be used to observe nucleus in an onion peel cell.

Q. Which country witnessed the largest ever recorded earthquake in the year 1960?

1. Indonesia
2. Nepal
3. Chile
4. Japan