Earth's Layers and Their Properties

Front

What are the main layers of the Earth?

Back

The Earth has four main layers: the crust, mantle, outer core, and inner core.

Front

Which layer of the Earth is the outermost?

Back

The crust is the outermost layer of the Earth.

Front

What is the thickest layer of the Earth?

Back

The mantle is the thickest layer of the Earth.

Front

What is the outer core primarily made of?

Back

The outer core is primarily made of liquid iron and nickel.

Front

What is the inner core primarily made of?

Back

The inner core is primarily made of solid iron and nickel.

Front

How thick is the Earth's crust on average?

Back

The Earth's crust is about 5 to 70 kilometers thick.

Front

What is the temperature range of the inner core?

Back

The temperature of the inner core can reach up to 5,700 degrees Celsius.

Front

What is the Big Bang theory?

Back

The Big Bang theory is a scientific explanation for the creation of the universe, suggesting it began as a singularity approximately 13.7 billion years ago.

Front

What evidence supports the Big Bang theory?

Back

Evidence includes the cosmic microwave background radiation and the observed redshift of galaxies.

Front

What is the difference between the outer core and inner core?

Back

The outer core is liquid, while the inner core is solid.