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Flashcards in geology Deck (57)
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1

what type of fossil? happens pretty fats and the whole body is preserved

preserved remains

2

what type of fossil? impression left by a leaf in soft sediment such as mud after some of the materials of that organism evaporates or becomes gasses

carbon film

3

occurs when a dinosaur might have walked through mud and left tracks

trace

4

once living material is replaced by minerals turning into stone

petrified

5

which group of rock is most likely to have fossils

sedimentary because metamorphic and igneous undergo severe pressure

6

transform boundaries

two plates sliding past each other in different directions

7

divergent boundaries

two plates moving away from each other

8

convergent boundaries

two plates moving towards each other

9

subduction zone

usually on convergent boundaries, when a plate of oceanic crust collides with basaltic crust

10

metamorphic to igneous

metamorphic rocks melt into magma. magma erupts and cools to create igneous rocks.

11

igneous to sedimentary

igneous rocks undergo weathering and erosion until they turn into sediment. the sediment is compacted and condensed into sedimentary rocks.

12

sedimentary to metamorphic

sedimentary rocks undergo heat and pressure until they form metamorphic rocks.

13

igneous to metamorphic

heat and pressure

14

metamorphic to sediment

weathering and erosion

15

example of the rock cycle rocks

granite, sandstone, quartzite

16

metamorphic

forms by: heat and pressure
characteristics: rough, heavy, hard, sparkly, potting/lines
examples: slate, marble, quartzite, schist, gneiss

17

sedimentary rocks

forms by: erosion and then being compacted
characteristics: softest, muddy coloring, large chunks combined
examples: shale, limestone, sandstone, coal

18

examples of igneous rocks

forms by: cool lava or magma
characteristics: black and grey, rough, mainly spotted, some spongy
examples: granite, balsalt, pumice, obsidian

19

adaptation

a change or process of becoming better suited for your environment

20

evolution

the process in which animals develop

21

natural selection

the process in which organism adapt to become better suited for their environment. weaker organisms are eliminated

22

fossil

remains or impressions of an organism

23

list the four layers of the earth

crust, mantle, outer core, inner core

24

what is the continental drift theory

alfred wegeners theory that the continents and the land masses were once in a super continent pangea and slowly drifted apart

25

evidence of pangea

evidence of glaciation, shapes and edges, geological provinces, mountain ranges,

26

what are the top three components in the mantle

oxygen, magnesium, silica

27

what is the temperature of the inner core

5000 degrees celsius

28

what type of plant boundary is indicated by the mid-atlantic ridge

divergent

29

which continent has the most plotted volcanoes

north america

30

divergent have

volcanoes