Types of Rocks
What type of are rocks formed from lava?
Igneous
How many layers does the earth have?
Four
What are the three types of rocks?
Igneous, sedimentary, metamorphic
What is the rock cycle?
A cycle where rocks change from igneous to sedimentary, and metamorphic rocks.
What is the streak test?
When a mineral is scratched on a white or black tile to see what colour shows.
What is needed to make a metamorphic rock?
Heat and Pressure
What are the four layers of the earth?
Inner core, outer core, mantle and crust
What type of rock are fossils found in?
What are broken down pieces of rock called? This is often found at the bottom of lakes and oceans.
Sediments
What are at least two ways to identify a minerals?
(properties)
Colour, hardness, lustre, cleavage, streak
What kind of rocks are formed from intense heat and pressure?
Metamorphic rocks
What is an opening in the earth's crust called?
A volcano
What is a scientist that studies rocks called?
Geologist
Heating, cooling, melting, weathering, erosion all happen in the _____________.
Rock Cycle
What are solid substances that have a defined structure?
Minerals
What rocks are formed when lava and magma cools and hardens?
Igneous rocks
What is not a layer in soil?
organic layer, top soil, sub soil, cement, parent layer, bed rock
Cement
Name a mineral that you use everyday.
Answers may vary
What is is called when rocks are slowly broken down into smaller pieces and carried away is called?
______ and ______
Weathering and erosion
What is the hardest mineral?
What is the softest mineral?
Diamonds
Talc
When rocks are compressed into layers, what type of rock is made?
Sedimentary rocks
What is hot liquid rock that is beneath the surface of the earth and turns into lava?
Magma
What does a paleotologist study?
Fossils
All rocks are made up of one or more_______.
Mineral
Is colour a good way to identify a mineral? Why or why not?
No, because some minerals can be many colours.