Rocks
Weathering
Fossils
The Earth
Vocabulary
100
Name the three types of rock.
metamorphic, sedimentary, igneous
100
What is it called when rocks break apart and change?
weathering
100
What is a fossil?
part of a living thing that lived long ago
100
Which layer of the earth can sometimes be seen as land and the rest is hidden under water?
crust
100
a non-living solid found in nature
mineral
200
What type of rock are fossils most often found in?
sedimentary
200
What is the hardest gemstone?
diamond
200
When a species is in danger of dying out, it is called _____.
endangered
200
Which layer of the earth is the hottest?
inner core
200
When all of a specific type of animal are dead, we say that they are _____.
extinct
300
What is an example of igneous rocks?
crystals
300
What is formed in hollow spaces by water dissolving rock?
caverns
300
A scientist who studies and hunts for fossils is called a ___.
paleontologist
300
The layer under the crust is called the ____.
mantle
300
Rocks formed from magma
igneous rocks
400
What is the difference between lava and magma?
lava is what magma is called once it has reached the earth's surface
400
When carbon dioxide mixes with rain and air it turns minerals into soft ____.
clay
400
What is the fossil called that has an insect trapped in tree sap?
amber
400
Which layer of the earth is known to be a "shell of melted metal"
outer core
400
Rocks changed by heat and pressure
metamorphic rocks
500
When layers of lava and ash pile up and harden, they make a ___?
volcano
500
What are rocks called that hang down from the inside of the caverns?
stalactites
500
What is a fossil called when trees have been turned into stone?
petrified wood
500
Name the 4 layers of the earth going from the outside inward.
crust, mantle, outer core, inner core
500
When a tree turns to stone it's called ____.
petrified wood
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