3 types of rocks
Igenous
Sedimentary
Metamorphic
Johnny sorted his rocks into a group of gray rocks, black rocks and white rocks. Which property did he look at?
Color
What is a mineral?
What is soil?
tiny pieces of ROOTS, ROCKS, MINERALS, BONES, AND HUMUS
What are the layers of the earth from the OUTSIDE TO THE INSIDE ?
CRUST
MANTLE
OUTER CORE
INNER CORE
What rock is formed from HEAT AND PRESSURE
metamorphic rocks
A rock that feels ROUGH is an example of which property?
Texture
Does a rock or a mineral have living things in it ?
no, it is non-living
Jewelry
Houses/ construction
Tools
true of false- Minerals can be solid, liquid or gas
What type of rock is made when melted rock cools and hardens?
Igneous
What is LUSTRE
how an object reflects light
What mineral is used for pencils?
Graphite
What is weathering?
the breaking down of rocks into tiny pieces called sediment
example - water can freeze inside tiny cracks of a rock and split it into two smaller pieces
What are properties (color, hardness, lustre, streak, texture) used for?
identifying rocks
Which rock is formed by TIME and PRESSURE and can be identified by its layers?
Sedimentary
Scratching a rock with your fingernail can show the rock's ___________.
HARDNESS
Which mineral is the hardest? which is the softest?
Hardest= diamond
Softest = talc
What is erosion?
erosion moves the tiny pieces that have been weathered.
Rocks can be moved by wind, air and____________
water
What is the rock cycle?
a cycle that shows how rocks change from one type to another
List the five properties of rocks that we have learned in class.
Color, texture, hardness, lustre, streak
True or False? Rocks are made from minerals
TRUE
melted rock inside the earth is called? Melted rock outside the earth is called?
Magma (inside)
Lava (outside)
What is sediment?
broken down pieces of rock