Blue
the large sections that make up Earth's crust and upper mantle are called
plates
Some volcanoes form over thin places in Earth's crust, called
hot spots
a large land mass surrounded by oceans or other land is called a
a physical feature of the land is called a
land form
mounds, called _____ _____ form where wind blows sand
sand dunes
the outer core is below the mantle and is probably made of melted ______
iron
a tool that graphs seismic waves as wavy lines is called a
seismograph
A mountain that forms around an opening in Earth's crust is a
volcano
a long, narrow crack in Earth's crust is called a
fault
examples of landforms include mountains and _____
plains
underwater earthquakes can cause huge ocean waves, called
tsunamis
Seismic waves travel at different _______ along Earth's _______ and _______ Earth's interior.
speeds, surface, through
tall landforms caused by folding or faulting are called
mountains
A volcano produces melted rock, called _____, which erupts into the air as _____.
magma, lava
features that look like canyons in the ocean floor are called
trenches
the gently sloping edge of a continent that connects the shore to the sea is a _________ __________.
continental shelf
the movement of a river slows down as it nears the ocean, dropping deposits that form triangle-shaped landforms, called ________.
deltas
below the crust lies a layer of rock called the _____
mantle
if the rock in Earth's crust suddenly shakes, an ______ occurs
earthquake
Most volcanoes form near _____ edges.
plate
underwater mountains that run through an ocean form an
ocean ridge
the source of an earthquake creates ________ ________ that travel outward
seismic waves
the sphere of solid material at Earth's center is called the _____ _____
inner core
rock in the mantel can move or slowly flow because of its great pressure and high
temperature
when plates slowly ram into each other, they can form bended rock layers, called
folds
the name of a region of land where water drains into a river is a __________________________.
drainage basin
In the Pacific Ocean, an example of volcanoes that formed over a hot spot is the _____ Islands.
Hawaiian
valleys and canyons are examples of landforms shaped by _______
water
the outermost layer of Earth is made up of solid rock, called the
crust
a mountain that forms around an opening in Earth's crust is a
volcano