Types of Rocks
Minerals are made from rocks. True or False.
False
Johnny sorted his rocks into a group of gray rocks, black rocks and white rocks. Which property did he look at?
Color
What is in soil that help plants and animals live?
Water and air
What is graphite used for?
Pencils
What are rocks made up of?
Minerals
What are the 3 types of rocks?
Metamorphic, sedimentary, igneous
A rock that feels grainy is an example of which property?
Texture
How are rocks broken into smaller pieces?
Water, wind, ice.
What is coal used for?
Heat
If you cannot scratch a rock with a file it is a __________ rock.
Very hard
What kind of rocks form in layers?
Sedimentary
The way a rock reflects light is called ___________.
Lusture
What is in soil?
Pebbles, clay, and decaying plants
What is granite used for?
Buildings and statues
Bits of rocky material that settle at the bottom of the ocean are called _________?
Sediments
What kind of rocks are made from magma that has hardened?
Igneous
Scratching a rock with your fingernail can show the rock's ___________.
Hardness
Does weathering occur over a short or long period of time?
Long
What is obsidian used for?
Surgical tools.
What are the layers of the earth?
Crust, mantle, inner core, outer core
What kind of rocks are formed from other rocks through heat and pressure?
Metamorphic
How do you test if there are carbonates in a rock or mineral?
With vinegar
What is the top layer of soil?
Top soil
What is marble used for?
Buildings and statues.
Explain how a sedimentary rock forms.
Sediments run off into the water where they settle at the bottom of the ocean. The weight of the water causes the rocks to form in layers.