Earth's Layers
Name the four layers that make up Earth.
crust, mantle, outer core, inner core
Earth's crust is made up of rocks. Rocks contain ________________.
minerals
True
Name the three main types of rocks.
Igneous, Metamorphic and Sedimentary
The __________ __________ is liquid metal.
outer core
Give an example of a very soft mineral.
Talc
(Igneous, Metamorphic, Sedimentary) rock forms when melted rock hardens.
Igneous
Wind and __________ erode, or wear away, rocks on Earth's surface.
water
The ____________ is made of rocks and soil.
crust
Give an example of a very hard mineral.
diamond
Layers of (igneous, metamorphic, sedimentary) rock form over time. The layers of rock at the bottom are the oldest.
sedimentary
True or False: You can sometimes tell how a rock formed by looking at it.
True
The ___________ ___________ is solid metal.
inner core
True or False: Minerals are living.
False
(Igneous, Metamorphic, Sedimentary) rock forms when heat and pressure inside Earth change an existing rock.
Metamorphic
Rocks deep below Earth's crust melt into ________________.
magma
The _____________ is made of solid and melted rock.
mantle
Give an example of a mineral that we use on our food.
Salt
When magma rises to Earth's surface it is called _____________.
lava
When you look at a rock, you may see tiny ____________ of different colors.
grains