Igneous Rocks
True or false: igneous rocks are usually very soft rocks
false; they are usually very hard rocks
True or false: metamorphic rocks can melt in high heat
False; metamorphic rocks do not melt
True or false: some sedimentary rocks contain fossils
True
True or false: rocks can be made up of one or more minerals
true
What is the outer layer of Earth's crust called?
soil
What do we call magma that has reached the Earth's surface?
Lava
True or false; metamorphic rocks never contain fossils
false; some contain fossils
Where did coal form: swampy areas or in the seabed?
swampy area
Which property of minerals tells us how shiny it is?
Luster
What 2 agents cause erosion?
Water and wind
What are igneous rocks formed from?
magma
How are metamorphic rocks formed?
They are formed from other rocks that were transformed due to heat or pressure
How are sedimentary rocks formed?
They are formed by the accumulation of sediments over thousands of years
What are minerals?
They are the natural materials that make up most rocks
What do we call the eroded material that settles when the water or wind stops?
sediments
How are igneous rocks formed?
the slow cooling of magma
What type of rocks were blackboards originally made out of?
Slate (a type of metamorphic rock)
Where did petroleum form?
The seabed
What are the 5 properties of minerals?
color, density, shape, luster, hardness
What 2 agents carry eroded materials from one place to another?
water and wind
Name 3 types of igneous rocks
Granite, gabbro, basalt, pumice
Name 2 types of metamorphic rocks
slate and marble
Name 3 types of sedimentary rocks
clay, coal, petroleum, limestone
Name 3 types of minerals
quartz, mica, granite, feldspar
What are 3 ways of breaking down rocks?
frost, chemical substances, heat, and living things