Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
landform
|
the different shapes of the land
|
|
|
volcano
|
a crack in the earth's surface though which lava flows
|
|
|
earthquake
|
when large parts of the earth suddenly move against each other
|
|
|
weathering
|
a process that breaks down or changes rocks
|
|
|
frost action
|
when expanding water moves the rocks and soil around it
|
|
|
abrasion
|
wearing away rocks by friction
|
|
|
soil
|
loose material at the surface of the earth
|
|
|
humus
|
decayed plant and animal matter
|
|
|
topsoil
|
layer of soil that contains humus
|
|
|
subsoil
|
layer of soil made up of coarse rocks that have been weathered
|
|
|
bedrock
|
layer of soil that is solid, unweathered rock
|
|
|
sediment
|
small bits of weathered material
|
|
|
erosion
|
moving of bits of weathered material from one place to another
|
|
|
deposition
|
dropping of sediment
|
|
|
delta
|
area of sediment that builds up at the mouth of the river
|
|
|
dune
|
landform caused by wind-blown sand
|
|
|
glacier
|
huge river of ice that slowly moves downhill
|
|
|
landslide
|
rapid downward movement of a large amount of soil and rocks
|
|
|
avalanche
|
when a large amount of snow and ice suddenly move down a mountain
|
