Earth's Structure and Weathering Flashcards
1
Q
Law of superposition
A
the oldest layers are at the bottom and the youngest layers are at the top
2
Q
Index fossils
A
flora and fauna from a specific time period preserved in a layer of rock
3
Q
Relative dating
A
places things in a sequence from youngest to older
4
Q
Absolute dating
A
given an absolute date
5
Q
Weathering
A
process of breaking down rocks on the earth’s surface
6
Q
Physical weathering
A
a change in the rocks’ form from physical processes such as changes in temperature, freezing and thawing
7
Q
Chemical weathering
A
rock material reacts with another substance and is chemically changed
8
Q
Erosion
A
the process of moving sediments from one location to another by gravity, wind or water
