Related Questions

The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called
A granite
B basalt
C igneous rocks
D sedimentary rocks
Igneous rocks are formed from molten rock material. Which one of the following is not an igneous rock?
A Granite
B Quartz
C Feldspar
D Slate
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
The rock formed from the solidification of molten matter (magma) is called:
A Sedimentary rock
B Metamorphic rock
C Igneous rock
D None of the above
A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?
A 15\/4 W
B 16\/9 W
C 16\/7 W
D 16\/15 W
একজন অ্যাথলেট পৃথিবীতে দীর্ঘ লাফ দিয়ে সর্বোচ্চ 4 m দূরত্ব যেতে পারেন। এই অ্যাথলেট চাঁদের পৃষ্ঠে দীর্ঘ লাফ দিয়ে সর্বোচ্চ কত দূর যেতে পারবেন ? [পৃথিবীর ভর ও ব্যাসার্ধ চাঁদের ভর ও ব্যাসার্ধের যথাক্রমে 81 গুণ ও 4 গুণ] (An athlete can cross a maximum distance 4 m by a long jump on earth surface. What is the maximum distance the athlete can cross by a long jump on moon's surface? [The mass and radius of earth are 81 times and 4 times of moon's mass and radius, respectively.])
A 0.79m
B 9 m
C 20.25 m
D 16 m
E 32.35 m
In spite of the very high temperature at the Earth's centre, the inner core is not in a molten state because the
A Core has a very high melting point
B Core is full of gases
C Great pressure at the centre raises the melting point of the rocks
D Core is impervious to heat
An earthquake is a shaking of the ground ... ... when masses of rock beneath the surface of the earth change position. Choose the correct option to fill in the gap.
A which occuring
B it occurs
C and therefore occurs
D that occurs
The slag which floats on the surface of the molten iron generally contains
A Lime (CaO) 45%
B Silica (SiO2) 35%
C Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8%
D All the above
________ are defined as the mass movement of rock, debris or Earth down a slope.
A Earthquake
B Cyclone
C Flood
D Landslide

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