Volcanoes, Earthquakes & Tidal Waves Worksheet-3
Multiple-Choice Question:
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Molten rock found within the Earth’s surface is known as:
(A) Lava (B) Magma (C) None of these
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The zone of active volcanoes around the Pacific Ocean is known as:
(A) Pacific ring of Volcanoes
(B) Pacific ring of Water
(C) Pacific Ring of Fire
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Magma comes out from ___ and reaches the ___ through cracks.
(A) Mantle, core (B) Mantle, crust (C) Core, crust
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A vertical tunnel through which molten rock comes out is known as:
(A) Crater (B) Vent (C) Canal
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The first seismograph was made in:
(A) Korea (B) Japan (C) China
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The point on the Earth’s surface directly above the focus of an earthquake is known as:
(A) Focus (B) Epicentre (C) Aftershocks
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Olympus Mons is the largest extinct volcanic mountain in the solar system formed by 28 km (in diameter) deep crater at its peak. It is present in:
(A) Earth (B) Mars (C) Jupiter
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The waves of energy that travel through the Earth’s surface as a result of an earthquake is known as:
(A) Earthquake waves
(B) Seismic waves
(C) Tsunami waves
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Which of the following precaution/s should be taken to avoid accident/s during earthquake?
(A) Don’t run in panic and push each other on the staircase
(B) Run to the terrace
(C) Collect the valuable belongings
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Earthquakes generate seismic waves which can be detected with a sensitive instrument called a:
(A) Seismograph (B) Radiograph (C) Seismogram
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Which of the following logarithmic scale is used to measure the magnitude (intensity) of an earthquake?
(A) Ritcher scale
(B) Earthquake measuring scale
(C) Ratio scale
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A series of huge ocean waves caused by undersea earthquake, volcanic eruptions, landslides etc., are known as:
(A) Tidal waves (B) Oceanic waves (C) None of these
Answer Key:
(1)-(B); (2)-(C); (3)-(B); (4)-(B); (5)-(C); (6)-(B); (7)-(B); (8)-(B); (9)-(A); (10)-(A); (11)-(A); (12)-(A)