Volcanoes
What is hot molten rock INSIDE the earth called?
magma
SLOWWWWWWWWWW
What is the earth's crust made of?
tectonic plates
What is erosion?
Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity.
Are ALL rocks nature made?
No, some rocks are man made
What is hot molten rock OUTSIDE the earth called?
lava
What is root wedging?
When plants begin to grow in small cracks of rock and make it break apart more
What is a type of plate boundary?
divergent, convergent, or transform
What happens first, weathering or erosion?
weathering is first! It breaks down the rocks and then erosion moves it away
What sphere makes up the earth's crust?
the geosphere
Where do most volcanoes occur?
The ring of fire
What is weathering?
when rocks break up due to natural processes and stay in the same location
What natural disasters do the earth's plates cause?
tsunamis, earthquakes, or volcanoes
Name an important US Landmark formed from erosion
The Grand Canyon
What type of map shows landforms?
physical maps
What do you call an inactive (sleeping) volcano?
dormant
Name 2 things that cause weathering
Water
● Air/Wind
● Chemicals
● Plants and animals
300 million years ago, earth had ______ continent? (how many)
just 1! Pangea
Can plants cause erosion?
No! Remember erosion is the moving of the little rocks AFTER weathering
Name a type of rock
Igneous, Metamorphic, Sedimentary
Why can volcanoes be good for the earth?
they create fertile soil that is good for farming
How can water make a crack in the ground bigger?
Water will freeze and ice expands making the crack bigger
What are the 3 layers of the earth?
crust, mantle, core
How can you protect beaches from erosion?
You can put rocks up to protect it from the wind and waves
What is a fossil?
Fossils are the remains or traces of plants and animals that lived long ago