welcome to

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welcome to
In SOCIAL
The world of technology
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LITHOSPHERE
LITHO means ROCK SPHERE means LAYER So,
LITHOSPHERE means rock existing layer (or) the
Earths crust that consist of rock and minerals.
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The changes in the landform in the Earths crust
is caused by two actions. They are
LANDFORMS
INTERNAL FORCE
EXTERNAL FORCE
Ex WIND, RIVER, GLACIER, etc.,
Ex EARTHQUAKE VOLCANOES
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INTERNAL FORCES
EARTHQUAKE
VOLCANOES
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VOLCANOES
Deep in the earth it is very hot. It is so hot
that rocks melt. The melted rock is called
magma. The magma is lighter than the rocks
around it so it rises. Sometimes it finds a
crack or hole in the earths crust and bursts
through. This is how a volcano begins.
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TYPES OF VOLCANOES
ACTIVE
DORMANT
EXTINCT

• Sleeping Volcano
• Have not erupted for long

• Living Volcano
• Erupting at present

• Dead Volcano
• Have not erupted
• in historic time

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EARTHQUAKE

• THE SUDDEN MOVEMENTS OR VIBRATIONS IN THE
  EARTHS CRUST
• IT IS CAUSED DUE TO MOVEMENTS OF PLATES

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FOLD
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FAULT
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EXTERNAL FORCES

• RIVER
• GLACIER
• WIND
• HUMANS, etc.,

THESE ARE CALLED AS AGENT OF GRADATION
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RIVERS
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GLACIERS
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EVALUATION
GET READY TO ANSWER THE FOLLOWING QUESTIONS
GET READY WITH YOUR PEN AND ANSWER SHEET THINK
BEFORE YOU INK

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1.THE TOP MOST LAYER OF THE EARTH
B) CRUST
A) CORE
D) OUTER
C) MANTLE
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2.WHAT IS MEANT BY LITHO?
A) MINERAL
B)OIL
D)ROCK
C) LAVA
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3.LANDFORMS ARE CAUSED DUE TO -------- DIFFERENT
FORCES
A)ONE
B)TWO
C) THREE
D)FOUR
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4.THE SUDDEN MOVEMENTS OR VIBRATIONS IN THE
EARTHS CRUST
A) FOLD
B)FAULT
C) EARTHQUAKE
D)VOLCANOES
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5.HOW MANY TYPES OF VOLCANOES ARE THERE?
A) ONE
B)TWO
C) THREE
D)FOUR
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6.WHAT IS AN ACTIVE VOLCANOE?
A) DEAD
B)SLEEPING
C) LIVING
D)NONE
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7.WHEN TWO PLATES COLLIDES, WHAT CHANGES TAKE
PLACE?
A) FISSURE
B)FAULT
C) FOLD
D)NONE
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8.WHEN TWO PLATES MOVE AWAY, WHAT CHANGES TAKE
PLACE?
A) FOLD
B)HILLS
C) MOUNTAINS
D)FAULT
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9.WHEN THE MAGMA REACHES THE EARTHS SURFACE IT
IS CALLED
A) MINERAL
B)CORE
C) LAVA
D)ROCK
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10.THE HOT MOLTEN MATERIAL THAT COME FROM INSIDE
THE EARTH
A) MINERAL
B)GAS
C) LAVA
D)MAGMA
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11.AN OPENING IN THE EARTHS CRUST
B)MAGMA
A) EARTHQUAKE
C) LAVA
D)VOLCANO
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12.THE PLACE OF ORIGIN OF THE EARTHQUAKE IS KNOWN
AS
A) EPICENTRE
B)FAULT
C) FOLD
D)FOCUS