1.- Plate tectonics: Evidence of plate movement

Descrição

https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/plate-techtonics/v/plate-tectonics-evidence-of-plate-movement
PEDRO ALVAREZ JIMENEZ
Quiz por PEDRO ALVAREZ JIMENEZ, atualizado more than 1 year ago
PEDRO ALVAREZ JIMENEZ
Criado por PEDRO ALVAREZ JIMENEZ mais de 9 anos atrás
200
1

Resumo de Recurso

Questão 1

Questão
Which 2 continents could fit into each other?
Responda
  • Antarctica and Asia
  • Africa and South America
  • Europe and Asia

Questão 2

Questão
Why do we use the alignment of magnetic rocks to know how old a plate is?
Responda
  • The older rock that's aligned with our current magnetic field
  • The newer rock that's aligned with our ancient magnetic field
  • The newer rock that's aligned with our current magnetic field

Questão 3

Questão
If you look at magnetite which is close to the mid-ocean ridge. What do you expect about its alignment?
Responda
  • They're aligned in a way that you would expect with the current magnetic field
  • They're aligned in a way that you would not expect with the current magnetic field
  • They're aligned in a way that you would expect with the ancient magnetic field

Questão 4

Questão
And what about if magnetite is further?
Responda
  • You have circles of other magnetic rock that is going in the opposite direction
  • You have stripes of other magmatic rock that is going in the same direction
  • You have stripes of other magnetic rock that is going in the opposite direction

Questão 5

Questão
Why this magnetic stripes pattern is an evidence of plate movement?
Responda
  • Wegener discovered them
  • The rift has had to move apart
  • Magnetic stripes change throughout time

Questão 6

Questão
In present times, What system do we use to measure the plate movement?,
Responda
  • Lageos
  • Computer monitoring
  • GPS satellites

Questão 7

Questão
Could you compare this speed to any biological process?
Responda
  • The speed at which hair grows
  • The speed at which fingernails grow
  • The speed at which fbones grow

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