Earth Layers and Density

How does the inner core compare in density to the other layers of Earth?

• The inner core is the least dense of all the layers of Earth.

• The inner core is the densest of all the layers of Earth.

• The inner core and outer core have the same density.

• The inner core's density is unknown.

Which is the most likely reason Earth is made of distinct separate layers?

• Volcanic lava inside Earth made the layers over time.

• Hot rocks sank to the center of Earth as it formed.

• Layers were made based on the density of rocks as Earth formed.

• Asteroids colliding with Earth formed the different layers.

Why does continental crust float higher on the mantle than oceanic crust?

• Continental crust is denser, so it floats.

• Continental crust is less dense, so it floats.

• Continental crust is much thicker than oceanic crust, so it floats higher.

• Continental crust is much thinner than oceanic crust, so it floats higher.

Which most likely explains why Earth’s inner core is solid?

• It is composed of rock that is not hot enough to melt.

• It is less dense and thick than the surrounding layers.

• It is under extreme pressure from surrounding layers.

• It is mostly diamond and other carbon-based materials.

Which of these correctly lists Earth’s layers in order from the center to the surface?

• outer core, inner core, asthenosphere, lithosphere

• asthenosphere, lithosphere, outer core, inner core

• inner core, asthenosphere, lithosphere, outer core

• inner core, outer core, asthenosphere, lithosphere

Which occurs as one goes deeper into Earth’s interior?

• density, temperature, and pressure increase

• density, temperature, and pressure decrease

• density decrease and temperature and pressure increase

• density and temperature decrease and pressure increases.

Which layers of Earth are mostly made of solid material?

• inner core and outer core

• crust and inner core

• crust and mantle

• mantle and outer core

Multiple ChoiceWhich choice describes Earth’s crust?Aa thick layer of rock floating on liquid metalBa group of continents floating on a large oceanCa warm layer of rock floating on a cold layer of rockDa thin layer of rock floating on a solid but fluid-like layer

• a thick layer of rock floating on liquid metal

• a group of continents floating on a large ocean

• a warm layer of rock floating on a cold layer of rock

• a thin layer of rock floating on a solid but fluid-like layer

Which statement best describes the density of Earth’s layers, based on their position and composition?

• The inner layers have the lowest density, while the outer layers have the highest density.

• The outer layers have the lowest density, while the inner layers have the highest density.

• The mantle has the highest density, while the crust and inner core have the lowest density.

• The mantle has the lowest density, while the crust and the outer core have the highest density.

Tags

NGSS.MS-ESS2-1

Which geological structure refers to the upper rigid layer of Earth that consists of the crust and part of the upper mantle?

• asthenosphere

• tectonic plates

• lithosphere

• core