A
Rocks are broken down by plants
What is biological weathering?
The layer of the earth under the crust
What is the mantle?
An igneous rock that formed above ground
What is an extrusive rock?
Liquid rock above ground
What is lava?
When a rock is hit and piece falls off near the rock
What is physical weathering?
A naturally occurring inorganic solid with a defined crystal structure and chemical composition
What is a mineral?
A measure of how easily a mineral is scratched
What is hardness?
When a mineral breaks along a clean, flat edge
What is cleavage?
A sedimentary rock without any layers
What is conglomerate?
Liquid rock underground
What is magma?
Igneous rocks formed underground
What are intrusive rocks?
Rocks are eaten away by acid rain
What is chemical weathering?
Metamorphic rocks without layers
A sedimentary rock with layers
What is a stratiated rock?
What are sedimentary rocks?
When tectonic plates spread apart
What is a divergent boundary?
Naturally occurring solid substances made of minerals
What are rocks?
The layer of the earth that is at the center
What is the inner core?
When tectonic plates slide past each other
What is a transform boundary?
A metamorphic rock with layers
What is a foliated rock?
The color of a mineral in powdered form
What is streak?
When one tectonic plate is forced beneath another when colliding
What is a subduction zone?
When tectonic plates collide together
What is a convergent boundary?
The way a mineral reflects light
What is luster?
Water/wind eating away at a rock and moving the particles elsewhere
What is erosion?