Podcast
Questions and Answers
What is the composition of the oceanic crust mainly made of?
What is the composition of the oceanic crust mainly made of?
- Granite with an enrichment of Si, Na, and K
- Aluminosilicates (feldspar)
- Basalt with an enrichment of Ca, Mg, and Fe (correct)
- Ultramafic with an enrichment of Mg
How thick is the oceanic crust on average?
How thick is the oceanic crust on average?
- ~1 Km to 3 Km
- ~20 Km to 40 Km
- ~4 Km to 10 Km (correct)
- ~50 Km to 70 Km
What is the dominant mineral in the continental crust?
What is the dominant mineral in the continental crust?
- Basalt
- Ultramafic minerals
- Granite
- Aluminosilicates (feldspar) (correct)
Which part of the Earth's structure contains a core mainly composed of iron and nickel?
Which part of the Earth's structure contains a core mainly composed of iron and nickel?
What percentage of the Earth's mass does the outer core contain?
What percentage of the Earth's mass does the outer core contain?
The inner core of the Earth remains solid due to:
The inner core of the Earth remains solid due to:
What are the four main chemical elements that make up the bulk of the Earth?
What are the four main chemical elements that make up the bulk of the Earth?
Which layer of the Earth is denser than the crust layer and 'plastic', allowing it to flow?
Which layer of the Earth is denser than the crust layer and 'plastic', allowing it to flow?
What is the average thickness of the continental crust?
What is the average thickness of the continental crust?
Which layer of the Earth is a liquid iron/nickel mixture?
Which layer of the Earth is a liquid iron/nickel mixture?
What is the term used to describe the boundary between the Crust and Upper Mantle where there is a change in rock type?
What is the term used to describe the boundary between the Crust and Upper Mantle where there is a change in rock type?
Which mineral is almost entirely composed of the outermost layer of the planet?
Which mineral is almost entirely composed of the outermost layer of the planet?
