Inside the Earth

Waves travel at different speeds through the Earth's interior. What property distinguishes the Earth's crust, mantle, and core?

• mass

• pressure

• composition

• temperature

Which of the following statements is not true of temperature in Earth's layers?

• The heat in the interior of the Earth is maintained by internal pressure and density

• The lithosphere has a higher temperature than the asthenosphere

• Radioactive substances inside the Earth release energy which creates heat

• heat increases with depth from the Earth's surface

Tags

NGSS.MS-ESS2-2

The intense heat from Earth's interior that warms the magma beneath the Earth's surface is called

• geothermal energy

• hydrogen energy

• tidal power

• solar energy

Like the layers of the ocean, the Earth's crust is divided into part based on physical properties. Which of the following statements best describes a layer of the Earth?

• The asthenosphere has the greatest density

• The mesosphere has the least density

• The outer core has the least density

• The inner core has the greatest density

What is the difference between the lithosphere and asthenosphere that makes up the mantle?

• The lithosphere is ismade of dense solid meal whle the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gasses while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is ridid and thin

• The lithosphere is made of solid rock while the asthenosphere is more flexible hot rock that moves.

What is the difference between the lithosphere and the asthenosphere that makes up the mantle?

• The lithosphere is made of dense solid metal while the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gases while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is rigid and thin

• The lithosphere is made of solid rock while the asthenosphere is hotter, more flexible rock that moves.

What is the difference between the lithosphere and asthenosphere that makes up the mantle?

• The lithosphere is made of dense solid metal while the asthenosphere is made of liquid molten metal

• The lithosphere is a mixture of gases while the asthenosphere is made of solid rock

• The lithosphere is molten rock that moves while the asthenosphere is rigid and thin

• The lithosphere is made of solid rock while the asthenosphere is more flexible hot rock that moves.

Answer explanation

The lithosphere is made of solid rock, providing a rigid outer layer of the Earth, while the asthenosphere consists of more flexible, hot rock that can flow, allowing for tectonic movement.

The formation of magma is a process driven by energy from _____________.

• the sun

• Earth's interior

Answer explanation

Earth's interior is extremely hot due to the heat from the inner core. This heat causes the mantle to be hot enough to melt rock into magma.

Tags

NGSS.HS-ESS2-3

As you move northwest through the Hawaiian Islands, the age of the islands increases. The older islands are northwest of the new islands because they

• age faster than those to the east

• formed from old, recycled, silica-rich magma

• were made of less lava than the southwestern islands

• formed first and were moved away from the hot spot

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What happens to pressure as we move from the crust to the inner core?

• Pressure Decreases

• Pressure Increases

• Nothing

• Don't worry about it