EARTH'S LAYERS
What is the thin, solid outer layer of Earth called?
Crust
What type of crust is thinner and denser?
Oceanic Crust
What are the two parts of Earth's core?
Outer Core and Inner Core
What is the rigid outer layer of Earth made of the crust and uppermost mantle called?
Lithosphere
Which Earth layer do we live on?
Crust
Which layer is the thickest layer of Earth?
Mantle
What type of crust is thicker and less dense?
Continental Crust
Is the outer core solid or liquid?
Liquid
What layer lies directly beneath the lithosphere?
Asthenosphere
Which layer is responsible for Earth's magnetic field?
Outer Core
What is the correct order of Earth's layers from the outside to the inside?
crust, mantle, outer core, inner core
What is the hot, slowly moving material in the mantle called?
Magma
Is the inner core solid or liquid?
Solid
Which layer is rigid and broken into tectonic plates?
Lithosphere
Why is the inner core solid even though it is extremely hot?
Because the enormous pressure at Earth's center keeps it solid.
Which layer is made mostly of solid iron and nickel and is the hottest?
Inner Core
Why does the mantle move even though it is mostly solid rock?
Because of the intense heat inside Earth causes the mantle to slowly flow and form convection currents
What elements make up most of Earth's core?
Iron and Nickel
Why can tectonic plates move over the asthenosphere?
Because the asthenosphere is softer and can flow slowly, allowing the rigid plates above it to move.
If you traveled from Earth's surface toward its center, what would generally happen to temperature and pressure?
Both temperature and pressure increase.
Which layer is made of solid rock but can flow very slowly over long periods of time?
Mantle
How do convection currents in the mantle affect Earth's surface?
They help move tectonic plates.
How does movement in the outer core help protect life on Earth?
It creates Earth's magnetic field, which helps protect Earth from harmful solar radiation.
What is the main difference between the lithosphere and asthenosphere?
The lithosphere is rigid and solid, while the asthenosphere is hotter, softer, and able to flow slowly.
If Earth's mantle suddenly stopped transferring heat, what would most likely happen to tectonic plate movement?
Tectonic plate movement would greatly slow down or eventually stop because mantle convection helps drive plate movement