A circular opening on the Earth's surface is called
Volcano
Ridge
Valley
Plates
The place of origin of an earthquake is
Epicentre
Focus
Crater
Ore
On the basis of the frequency of eruption volcanoes are classified into
Two
Three
Four
Six
Extinct volcanoes are also called ___________.
Sleeping volcanoes
Living volcanoes
Dead volcanoes
Dreaming volcanoes
The point on the Earth's surface which is vertically above the focus is called ___________.
Tropic of capricorn
Tropic of cancer
Equator
The earthquake tremors are recorded by an instrument called ____________.
Seismograph
Phonograph
Anemometer
Hygrometer.
The Richter scale ranges from
0 to 9
0 to 100
0 to 10
0 to 5
The world's most beautiful volcanic mountain.
Fujiyama
Kilimanjaro
Vesuvius
Rainier
The forces which originate from within the Earth
Exogenic forces
Endogenic forces
Buoyant force
Frictional force
The primary waves of earthquake are also called ______________.
Push waves
Pull waves
Shake waves
Surface waves