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planet earth questions

what are the eras

precambrian
paleozoic

mesozoic

cenozoic

how are crystals made

particles in a mineral line up in a regular pattern

why was wageners theory not accepted

Geologists thought the earth was shrinking
He couldnt prove a way how the continents where moving

3 families of rock

sedimentary
metamorphic

igneous

6 properties to identifie a mineral

colour lustre
streak cleavage

fracture hardness

how to find epicentre

where 3 seismograms meet

evidence for the theory of the sea floor moving

mid atlantic ridge

3 types of weathering

mechanical
chemical

biological

how a valcona begins and ends

molten rock expands. As it expands it moves upwards. Lava shotts out in the air. Or flows from the vent and flows down the sides

difference between folds and faults in mountains

folds- bend in rock layers
faults - large cracks

4 peices of evidence proving the theory of pangea

-fossil corelation
-mountain and rock corelation

-paleo climate data

-coal deposits

theory of plate tetonics

the lithosphere is broken up into areas called plated that bith carry continental crust and oceanic crust

Quiz
American Government Branchs
English vocabulary B1
English Vocabulary level A2
Giurisprudenza
Ingles
ekologi
Prefixes
English vocabulary level A1
Getallen
Cooking ingredients and expressions
genetic variation and mutations
pratiques et réalité sociale
new job
Noun formation
Hector AH
Injuries
Obras
verbos
l'ouverture vers d'autres traditions juridiques
Regular Verbs
german seperable
Generación del 27
german adjectives 2
zodziai RUBAI
german adjectives
partie 1 : les racines anciennes de la familles (1er siecle a 5eme)
Physical activities
meios de transporte
mathematique
Natural disasters
spelling bee #1
BUSINESS STATISTIC
Parts of the city
reflexão e absorção da luz
Histoire du droit de la famille et des personnes
dna vs rna structure
replication and transcription
Evolution
Figures of Speech
Voc Anglais 3
mitosis
Voc Anglais 2
meiosis
mitosis
notas musicales
Voc Anglais 1
Revolutionerna instuderingsfrågor & begrepp
in
Kapha Dosha in Ayurveda
les 6 saveurs en ayurvéda