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42 terms

Landforms Vocabulary

Vocabulary words for the Science Unit on Landforms.
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continent
one of the main landmasses on Earth, such as Africa, Asia, or North America
convection current
a series of circular motions that occur in substances when heating and cooling happen together
core
Earth's center, made up of a liquid outer core and a solid inner core
crust
the thin outer layer of Earth's surface
delta
an area of land formed by sediment at the mouth of a river
deposition
the act or process by which wind or water sets down sediment
dune
a mound of sand formed by the action of wind or water
earthquake
a sudden shaking of the ground due to plate movement
fossil
the remains or traces of a plant or animal that turned to stone over time
erosion
the gradual wearing away of rock or soil by water, wind, or ice
igneous rock
rock formed by the hardening of hot, molten magma
glacier
a large body of accumulated ice and compacted snow that is found year round and that slowly moves downhill
landmass
a large area of land, such as a continent
landform
a natural formation on Earth's surface, such as a valley, plateau, mountain, plain, hill, or glacier
island
an area of land, smaller than a continent, that is surrounded by water
mantle
the semi-solid layer of Earth that lies between the crust and the core
magma
melted, liquid rock beneath Earth's surface
levee
a ridge or raised area of land that prevents a river from overflowing
plate
a large sheet of rock that makes up part of Earth's crust
moraine
a pile of soil and rocks scraped up and deposited by a glacier as it recedes
metamorphic rock
rock formed by exposing igneous or sedimentary rock to extreme heat and pressure
sediment
particles of dirt and rock that are carried by water, wind, or ice and deposited elsewhere
rock cycle
the series of changes that rock undergoes as it shifts between different forms
plate tectonics
the theory that the plates of Earth's crust move due to the movement of magma in Earth's mantle
weathering
the process of wearing away or otherwise changing Earth's surface from exposure to natural forces
volcano
a place in Earth's crust where gases, ash, and lava spew onto the surface
sedimentary rock
rock formed when sediment is compacted
Boundary
The limit or border of an area or region
Cartographer
A person who makes maps
Contour interval
The distance in elevation between contour lines
Contour line
A line on a topographic map that connects points of
equal elevation
Delta
A fan-shaped (triangular) deposit of earth materials at a
mouth of a stream.
Deposition
The process by which eroded earth materials settle out
in another place
Flood
A very heavy flow of water, which is greater than the normal
flow of water and goes over the stream's normal channel
Flood plain
Land that is covered by water during a flood, formed
from sediments deposited by a river
Map
A representation, usually on a flat surface, of an area or the
features of an area
Model
A representation of an object or process.
Key
An explanation of symbols used on a map.
Slope
The angle or slant of a stream channel or land surface
Sediment
Tiny bits of rock, shell, dead plants, or other materials
transported and deposited by wind, rain, or ice
Structure
Something built by people, like a building.
Symbol
An object or picture that represents something else