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Chapter 4 – Rocks

Key terms & definitions from Chapter 4 on rocks & rock formation(s). Activities intended for grade 8 only.

AB
A forming mineralWhat is a mixture of minerals that makes up rocks ?
GraniteWhat is the most common intrusive rock?
BasaltWhat is the most common extrusive rock?
GrainsWhat are particles or other rocks?
TextureWhat describes the look & feel the rocks surface?
Igneous RockWhich type of rock forms by cooling of magma or lava?
Sedimentary RockWhich type of rock forms from particles of other rock or remains of plants or animals?
Metamorphic RockWhich type of rock forms from existing rock that is changed by heat & pressure or chemical reactions, and forms deep underground ?
Intrusive RockWhich “Igneous Rock” was formed from magma hardening below the Earth’s surface?
Extrusive RockWhich “Igneous Rock” was formed from lava that erupted onto the Earth’s surface?
SilicaWhat do most of the Earth’s mineral’s contain?
SedimentWhat are small solid pieces of material that come from rocks or living things?
ErosionWhat is running water, wind or ice that loosens & carries away pieces of rock?
DepositionName the process by which sediments settle out of water or wind carries it.
CompactionWhat is the process the presses sediments together by pressure?
CementationWhat is it called when dissolver minerals crystallize & glue particles of sediment together?
Clastic RockWhen a sedimentary rock forms from rock Fragments are squeezed together, what is the process called?



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