Study Inside the Earth Flash Cards

 
Pile Management Card
Inside the Earth

loading
The strong lower part of the mantle is called ______________________________.
mesosphere
Will seismic waves travel faster through through a solid or a liquid. Why?
They travel faster through a solid, because they travel faster through denser materials.
What are seismic waves?
vibrations from an earthquake
What do scientists use to study the earth's interior?
seismic waves
Why do less dense compounds make up the earth's crust, while more dense compounds make up the core?
Gravity pulls the more dense compounds to the core.
How much of the Earth's mass is made up of crust?
Less than 1%.
How much of the Earth's mass is made up by the mantle?
67%
How much of the Earth's mass is made up by the core?
33%
Why do scientists look to the ocean floor to research the mantle?
Magma from active volcanoes flows onto the ocean floor.
The mantle is composed of more of the element _________________ than the crust.
magnesium
Oceanic crust is denser than the continental crust because it contains more of which 3 elements?
iron
calcium
magnesium
What 3 elements make up most of the Earth's crust?
oxygen
silicon
aluminum
List the 3 layers of the Earth, based on their composition.
crust, mantle, and core
A substance composed of 2 or more elements is a(n) ____________________.
compound
What are the 2 kinds of crust that the tectonic plates may contain?
oceanic and continental
What element makes up most of the Earth's core?
iron
Large pieces of the lithosphere that move around on the asthenosphere are called _____________________.
tectonic plates
The outermost rigid layer of the Earth is called _______________________.
lithosphere
The layer of slowly flowing rock in the mantle is called ______________________.
asthenosphere
The liquid layer of the core is called ______________________________.
outer core
The solid layer of the core is called __________________________.
inner core
Place this card into pile: