7th Standard Syllabus & Materials
7th Standard
Tamilnadu 7th Standard Maths T2 - தகவல் செயலாக்கம் Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - தகவல் செயலாக்கம் Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - வடிவியல் Important Questions And Answers Study Material - QB365 Set C
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - வடிவியல் Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - வடிவியல் Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - இயற்கணிதம் Important Questions And Answers Study Material - QB365 Set C
Published on: 30/07/2019
Interior of the Earth
Download Tamil Nadu 7th Standard Social Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Social Science Test
1.
In India, the Himalayan region and the ________ valley are prone to earthquakes.
Ganga - Brahmaput
Yamuna
Sind
Sutlej
2.
_____ belt is known as the “Ring of Fire”.
Circum - Pacific
Mid - Atlantic
Mid - Continental
Antarctic
3.
Lava cones are ________.
mountains of accumulation
mountains of deformation
relicit mountains
fold mountains
4.
The magnitude of an earthquake is measured by ________.
Seismograph
Richter scale
Ammeter
Rotameter
5.
Nife is made up of ________.
Nickel and ferrous
Silica and aluminum
Silica and magnesium
Iron and magnesium
6.
Lava flow is affected by _____________
7.
The scientific study of volcanoes is called _____________
8.
Seismology is the study of ________.
9.
Magma rises to the surface and spreads over a vast area is known as ______.
10.
The core is separated from the mantle by a boundary called ______.
11.
Mt. Popa, Mt. Fujiyama, Mt. Kilimanjaro, Mt. Kenya.
12.
Stromboli, Helens, Hawaii, Fujiyama
13.
Uttar Kashi, Chamoli, Koyna, Krakatoa
14.
crust, magma, core, mantle
15.
Earthquake
16.
Earth
17.
Mt. Kenya
18.
Pacific Ring of Fire
19.
Earth quake
20.
Statement 1: Many volcanoes of Mexico and Central America are cinder - cone volcanoes.
Statement 2: Shield volcano is also called strato volcano.
(a) 1 is true, 2 is wrong.
(b) 1 is wrong, 2 is true.
(c) Both the Statements are wrong.
(d) Both the Statements are wrong.
21.
Assertion (A): The Pacific Ocean includes two thirds of the world’s volcanoes.
Reason (R): The boundary along the Eastern and Western coast areas of the Pacific Ocean is known as the Pacific Ring of Fire.
a. A and R are correct and R explains A
b. A and R are correct but A does not explain R
c. A is incorrect but R is correct
d. Both A and R are incorrect
22.
Give an example of extinct volcano.
23.
Name the outer most layer of the earth.
24.
What is a volcano?
25.
Define Earthquake.
26.
What is mantle?
27.
Active volcano and dormant volcano
28.
SIAL and SIMA
29.
Are Volcones Destructive (or) Constructive?
30.
Write about the effects of an earthquake?
1.
(a)
Ganga - Brahmaput
2.
(a)
Circum - Pacific
3.
(a)
mountains of accumulation
4.
(b)
Richter scale
5.
(a)
Nickel and ferrous
6.
( )
Viscosity
7.
( )
Volcanology
8.
( )
earthquake
9.
( )
fissure eruption
10.
( )
Weichart-Gutenberg discontinuity
11.
Mt. Fujiyama
12.
Fujiyama
13.
Krakatoa
14.
magma
15.
Trembling
16.
Blue planet
17.
Africa
18.
World volcanoes
19.
Sudden movement
20.
(a) 1 is true, 2 is wrong.
21.
(a) A and R are correct and R explains A
22.
Mt. Popa of Myanmar and Mt.Kenya of Africa.
23.
Crust
24.
A volcano is a vent or an opening in the earth's crust through which hot magma erupts from deep below the surface. The opening is usually circular in form
25.
A sudden movement of a portion of the earth's crust which produces a shaking or trembling is known as an earthquake.
26.
The layer of the earth beneath the crust is called the mantle. It is separated from the crust by a boundary called Mohorovicic discontinuity.
27.
| S.No | Active volcano | Dormant volcano |
| 1. | Valcanoes that erupt frequently are called active volcanoes. Most of the active volcanoes lie in the Pacific Ring of Fire belt which lies along the Pacific coast | These volcanoes have shown no sign of activity for many years but they may become active at any time. These are called Sleeping Volcanoes. |
| 2. | Mt. Stromboli in,.Mediterranean Sea, St.Helens inUSA, Pinatubo in Philippines. Mauna Loa in Hawaii is the world's biggest active volcano. | Vesuvius mountain of ltaly, Mt.Fujiyarna of Japan, Mt.Krakatoa of Indonesia are famous examples of this types. |
28.
| S.No | SIAL | SIMA |
| 1. | The upper part of the earth's crust. | The lower part of the crust. |
| 2. | Has granite rocks and forms continents. | Continuous zone of denser basaltic rocks forming ocean floor. |
| 3. | Has silica and Alumina referred to as SIAL | Has silica and Magnesium called SIMA |
29.
Volcanoes are constructive and Destructive.
Constructive effects:
(i) Volcanoes provide nutrients to the surrounding soil as volcanic ash contains minerals beneficial to plants.
(ii) Some plateaus and plains are formed due to volcanic eruption.
(iii) They cool off the earth removing heat from the interior.
Destructive effects:
(i) They cause earth quakes, fast floods, mud slides and rock falls.
(ii) Dust and Ash that come out of volcanoes are very harmful to living things
30.
(i) Earthquakes may cause changes in the earth's surface. Vibrations often set landslides in mountainous regions.
(ii) A greater danger in an earthquake is the falling of buildings.
(iii) Fire is another great danger. Underground water system is naturally disturbed by such movements.
(iv) An earthquake which originates below or near the sea causes great disturbance in the water.
(v) Tsunami, a Japanese term, is the name given to the huge wave caused in the sea by an earthquake
7th Standard Syllabus & Materials
7th Standard
Tamilnadu 7th Standard Maths T2 - இயற்கணிதம் Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - இயற்கணிதம் Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - அளவைகள் Important Questions And Answers Study Material - QB365 Set C
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - அளவைகள் Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
