natural disasters
Rock cycle
Weathering
Time line
Continental Drift
100
This natural disaster forms igneous rocks.
What is a Volcano?
100
This rock comes from cooled lava.
What is igneous?
100
Tree roots grow into cracks in rocks and are called this.
What is Root Wedging?
100
This Period lasted the longest.
What is Precambrian?
100
The super continent was also called this.
What is pangea?
200
When the tectonic plates shift it creates this.
What is earthquakes?
200
Rock fragments that make up sedimentary rocks are called this.
What is sediments?
200
The two different types of weathering.
What is machanical and chemical weathering?
200
"Today" is located were on the timeline.
What is at the start or beginning?
200
The continents move this amount each year.
What is a couple of centimeters?
300
When a volcano has a rock over it, it builds up this.
What is pressure?
300
This rock is formed inside the earth's surface.
What is Intrusive?
300
When water goes into cracks in a rock and ice forms and breaks apart the rock.
What is Frost Wedging?
300
The three periods, in the Mesozoic Era, when the dinosaurs existed.
What is Triassic, Jurassic and Cretaceous?
300
The gradual movement of the continents across the earth's surface through geological time.
What is continental drift?
400
When a earthquake happens underwater it creates this.
What is a Tsunami?
400
This is when rocks are exposed to rain, and ice. It then breaks down into smaller pieces like pebbles and sand. This is called.
What is soil?
400
Rusting is classified as this type of weathering.
What is Chemical Weathering?
400
Reptiles first appeared 330 million years ago in this period.
What is Pennsylvanian Period?
400
This scientist discovered continental drift was real and there used to be a super continent.
What is Alfred Wegener?
500
The place where two continental plates meet.
What is a plate boundary?
500
Most of the rocks exposed on earth's surface are.
What is sedimentary?
500
When glaciers move, they drag rocks on the bottom and then makes this type of weathering.
What is Abrasion?
500
Modern humans appeared this long ago.
What is 200,000 Years?
500
These were the effects of continental drift.
What is earthquakes,and tsunami?
M
e
n
u