Scientists have discovered a 4 billion-year-old giant continent near Earth's mantle. According to the study, the underground rocky continent may have formed from the ancient magma ocean that froze around the beginning of Earth's formation about 4.5 billion years ago. The speed and pattern of seismic waves change while passing through different layers of the Earth. A mantle plume is the rise of unusually hot rock within the mantle of the Earth. These rocks melt due to extreme temperatures and come out in the form of lava. The mantle plume may partially melt when it reaches a low depth. Volcanoes originate due to mantle plume. The two most famous locations of the mantle plume on Earth are Hawaii and Iceland. That is why the rocks here were used to test the samples of the mantle. So, take this quiz and know more about the discovery of the giant continent near earth's mantle.
1. The surface areas of the mantle plume are called ___________..
A. Coldspots
B. Hotspots
C. Fridgespots
D. All of above
2. What kind of structure of volcanic lava comes from the mantle to Earth's surface?
A. Bridge-like structure
B. Pillar-like structure
C. Deep-like structure
D. None of above
3. Which of the following best describes the Earth's outer core?
A. The area of the Earth that is sometimes called the lithosphere
B. The thinnest layer of the four layers that make up the composition of the Earth
C. It consists of liquid iron and nickel
D. It resides between the crust and the inner core
4. The isotopes present during _______ such as helium-3 exist in samples from underground rocky continents.
A. Big bang
B. Supernova
C. Black hole
D. None of above
5. Volcanic lava from the mantle comes to the Earth's surface through a pillar-like structure. What is this columnar structure called?
A. Crust Plump
B. Inner-core
C. Outer-core
D. Mantle Plume
6. The underground continent may be an older form of our planet and most likely survived the planet-rocking effect, creating ___________.
A. Mountain
B. Desert
C. Moon
D. Sea
7. The volcanic lava coming from the earth's mantle to the surface is converted into which rocks?
A. Metamorphic rocks
B. Igneous rocks
C. Sedimentary rocks
D. All of these
8. New geological samples have been prepared by scientists using data from older samples from the island of Baleni, Antarctica. In these areas, there is __________ of volcanic lava from the mantle of the earth towards the surface.
A. Reaction
B. No any action
C. Absorption
D. Extraction
9. Which of the following best describes the tectonic plates of the Earth?
A. The area of the Earth that is sometimes called the lithosphere
B. The thinnest layer of the four layers that make up the composition of the Earth
C. It consists of liquid iron and nickel
D. All of above
10. The underground continent maybe the old form of our _________.
A. Satellite
B. Planet
C. Asteroid
D. Meteoroid
11. What layer of the Earth creates the magnetic field around the Earth?
A. Crust
B. Mantle
C. Outer Core
D. None of these
12. Which layer is the thin outer layer of the Earth?
A. Mantle
B. Crust
C. Both of above
D. None
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