Earth's Interior

True or False? The crust is the innermost compositional layer of Earth.

• true

• false

• The core is the innermost compositional layer of Earth.

• The crust is the innermost compositional layer of Earth.

True or False? Earth's core is divided into three layers based on physical properties.

• Earth's core is divided into three layers based on physical properties.

• Earth's core is divided into two layers based on physical properties.

• True

• False

True or False? The mesosphere is a physical layer and part of the Earth's mantle.

• The mesosphere is a physical layer and part of the Earth's mantle.

• The mesosphere is a physical layer and part of the Earth's core.

• True

• False

True or False? The lithosphere is composed of the top part of the mantle and the all of the crust.

• The lithosphere is composed of the top part of the mantle and the all of the crust.

• The lithosphere is composed of the top part of the crust and the all of the mantle.

• True

• False

True or False? Scientists use seismic waves to study Earth's interior.

• True

• False

• Scientists use seismic waves to study Earth's interior.

• Scientists use ocean waves to study Earth's interior.

Earth formed in a swirling disk of matter surrounding the sun. As particles in the disk collided and stuck together, they grew larger and some eventually became planets. What force was responsible for the collisions between these particles?

• solar radiation

• gravity

• seismic waves

• radioactive decay

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following is a source of heat in Earth's interior?

• earthquakes

• solar radiation

• seismic waves

• radioactive decay

The illustration shows how the solar system formed. Which statement best summarizes what the illustration shows?

• A solar nebula expanded and large chunks of matter formed the planets.

• A solar nebula collapsed into a swirling disk of matter where the sun formed and where particles collided and formed planets over time.

• A star expanded into a swirling disk of matter where the sun formed and where particles collided and formed planets over time.

• A star expanded into a cloud of matter where the particles collided and combined to form the sun and planets.

Which of the following statements summarizes how the formation of the solar system was similar to the differentiation of Earth's layers?

• In both processes, the densest materials moved to the center.

• In both processes, the densest materials moved to the outside.

• In both processes, the densest materials formed the middle layer.

• In both processes, the densest materials were evenly distributed.

Which of the following series summarizes the components of the solar system, from the center of the solar system outward?

• sun, outer planets, inner planets

• outer planets, inner planets, sun

• inner planets, sun, outer planets

• sun, inner planets, outer planets