Parashnotri

Who gave the theory of continental drift, a precursor to Plate Tectonic Theory?

• Alfred Wegener

• W.J. Morgan

• A.N. Strahler

• F.B. Taylor

Which of the following is NOT a principle of plate tectonics?

• Lithosphere rests on and slides over the asthenosphere.

• Lithosphere is broken up into seven very large continental and ocean-sized plates

• Tectonic processes controlling creation and destruction of landforms, and the evolution of Earth's crust

• All of Earth's continents were once part of an enormous, single landmass called Pangaea.

Which geological boundary is defined by the interface between the crust and the mantle?

• Lithosphere-asthenosphere boundary

• Asthenospheric trench

• Mohorovicic discontinuity (Moho)

• Inner core boundary

Which of the following pairs of compositional elements are found in Earth's core?

• Silica and aluminium

• Granite and basalt

• Iron and nickle

• Carbon and granite

What evidence is primarily used to analyse Earth's internal structure?

• Fossil records and mineral deposits

• Satellite imagery and ocean currents

• Seismic wave propagation

• Radiocarbon dating

What does the term "ultramafic" refer to in the context of the Earth's mantle?

• High water content in the rocks

• Rocks rich in silica and aluminium

• Rocks rich in magnesium and iron

• Completely molten material

What type of tectonic boundary is responsible for the formation of mid-oceanic ridge?

• Convergent boundary

• Divergent boundary

• Transform boundary

• Subduction zone

What distinguishes the outer-inner core (OIC) from the inner-inner core (IIC)?

• State of matter

• Iron composition

• Polarity orientation of iron crystals

• Presence of asthenosphere material

The distribution of placer gold deposits in Ghana and Brazil suggests what about their past geographic configuration?

• Both were volcanic islands

• They shared a connected mountain range

• They were once connected as part of a larger landmass

• The gold originated in Ghana and was transported by water

The Gondwana tillite is significant evidence of:

• Mountain formation

• Ancient widespread glaciation

• Deep-sea sedimentation

• Volcanic activity in Pangaea