What does Earth's land look like?
A physical feature of the land is called a _________.
Landform
Underwater mountains that run through an ocean form an _____________.
ocean ridge
The outermost layer of Earth is made up of rock, called the _______________.
crust
A long, narrow crack in Earth's crust is called a __________.
fault.
What is a volcano?
A mountain that forms around an opening in Earth's crust.
The tallest of all landforms are ____________.
mountains
Features that look like canyons in the ocean floor are called _____________.
trenches
Below the crust lies a layer of rock, called the _________.
mantle
The large sections that make up Earth's crust and upper mantle are called ____________.
plates
Most volcanoes form near ___________ edges.
plate
Vast areas of land without mountains or hills are called ___________.
plains
The gentle sloping edge of a continent that connects the shore to the sea is a _________________________.
continental shelf
Rock in the mantle can move or slowly flow because of great pressure and high ___________.
temperature
If the rock in Earth's crust suddenly shakes, an ____________ occurs.
earthquake
What's the name of melted rock beneath a volcano?
Magma
Valleys and canyons are examples of landforms shaped by _________.
water
What are deltas?
When the movement of a river slows down as it nears to the ocean to drop deposits that form triangle-shaped landforms.
The outer core is below the mantle and is made mostly of melted ____________.
iron
Underwater earthquakes can cause huge ocean waves, called _____________.
tsunamis
What's the name of magma that erupts onto the surface?
Lava
Mounds, called ____________, form where wind blows sand
sand dunes
What is a drainage basin?
The name of a region of land where water drains into a river.
The sphere of solid material at Earth's center is called the _____________.
inner core
What is a tool that graphs seismic waves?
Seismograph
Some volcanoes form over thin places in Earth's crust, called ______________. Some volcanoes formed over a hot spot in the __________________ in the ______________ islands.
hot spots; Pacific Ocean; Hawaiian