Layers of the Earth
Which layer of the Earth is the thinnest/smallest?
Crust
What type of rock is made of pieces of other rocks?
sedimentary rocks
What process makes lava/magma?
melting
How old is the Earth?
What is weathering?
rocks breaking into pieces
The lithosphere is made of which two layers?
Crust and the Top of the Mantle
To become a fossil, an organism must have ______ parts.
hard
heat and pressure
When plates move together, what 2 features (things) are made?
What is erosion?
Which layer of the Earth is the thickest/biggest?
Mantle
If a rock melts, what type of rock does it eventually become?
igneous rock
What processes made sediment?
weathering and erosion
What was the name of the last supercontinent (last time all the land was together)?
Pangaea
C Horizon
The inside of the Earth is very _____.
hot
What is a fossil?
evidence of life in a rock
What processes make a sedimentary rock from sediments?
compaction and cementation
where plates are sliding
What are the 4 causes of erosion?
gravity, wind, water and ice/glaciers
metal
At what places on Earth would you find igneous rocks?
volcanoes
What processes make an igneous rock from a sedimentary rock?
melting and cooling
Rifts and mid-ocean ridges form at what type of plate boundary?
where plates move apart
Rocks breaking because they are changing what they are made of is called what?
chemical weathering