Researchers on February 21, 2023 stated an intensive research of Earth’s deep inside confirmed the existence of a definite construction inside our planet’s internal core — a wickedly scorching innermost strong ball of iron and nickel about 1,350 km-wide. This week’s quiz is about Earth and its make-up.
Sci-Five | The Hindu Science Quiz: on layers of the Earth
1 / 5 |
Danish seismologist Inge Lehmann is credited to be the discoverer of the Earth’s internal core. When did she make the discovery?
Dr. Lehmann found the internal core of Earth in 1936 through the use of seismic wave information.
Next
2 / 5 |
Thousands of earthquakes happen yearly, and each supplies a glimpse of the Earth’s inside. When was the first trendy seismographs that detect and file the motion of seismic waves created by earthquakes invented?
British geologist John Milne designed one of the first dependable seismographs in 1880 and traveled extensively in Japan to arrange 968 seismological stations for a survey of Japan’s widespread earthquakes.
Next
3 / 5 |
Which of the layers of the Earth is strong?
- Outer core
- Inner core
- Both outer and internal cores are liquid. Only the mantle is strong
- Except for the crest, it’s all liquid under
Although the internal core could be very scorching, it’s strong as a result of it’s experiencing very excessive strain. The strain in the outer core isn’t excessive sufficient to make it strong.
Next
4 / 5 |
How deep is the centre of Earth from its floor?
- About 6,400 km
- About 2,900 km
- About 5,200 km
- About 4,100 km
Earth’s internal core extends from 5,150-6,370 km under the Earth’s floor.
Next
5 / 5 |
Elements referred to as siderophiles are present in the internal core of Earth. What are they?
- Elements that dissolve in Nickel
- Elements that received’t break down below strain
- Elements that dissolve in iron
- Elements that turn into liquid below strain
Elements labeled as siderophiles are the ones that are inclined to affiliate with iron.
Next
