Unit 2 Earth Science

Front

What type of rocks is it NOT useful to use radiometric dating on?

Back

Sedimentary rocks

Front

Define asthenosphere.

Back

Semi-fluid layer of the Earth's mantle beneath the lithosphere and above the mesosphere.

Front

Which layer of the Earth is referred to as the inner core?

Back

Layer #7.

Front

What are the sources of Earth's internal heat?

Back

Radioactive decay and residual heat from formation.

Front

Which layer of the Earth is referred to as the mantle?

Back

Layer #2.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is the difference between the lithosphere and asthenosphere?

Back

The lithosphere is rigid and solid, while the asthenosphere is semi-fluid and allows for tectonic movement.

Front

What is the composition of the Earth's inner core?

Back

Primarily composed of iron and nickel.

Front

How does radioactive decay contribute to Earth's internal heat?

Back

Radioactive isotopes decay and release heat, contributing to the overall temperature of the Earth's interior.

Front

What is the mesosphere in relation to the Earth's layers?

Back

The layer of the Earth's mantle located below the asthenosphere and above the outer core.