Earth History

The principle that younger rocks lie above older rock in undisturbed sequences is called:

• radioactive decay

• superposition

• petrification

•   striation

Tags

NGSS.MS-ESS1-4

Knowing the rate of the decay of an element is behind these processes:

• Superposition

• continental drift

•  radiometric dating

•  an element's half life

Tags

NGSS.HS-PS1-8

These events help divide geologic time into eons, eras, periods, epochs, etc.

• climate 

• life-forms

• clouds

• changes in rock types

Tags

NGSS.MS-ESS1-4

This layer of the Earth is very thick and has most of Earth's mass.

• inner core 

•  outer core 

•   crust

• mantle

Large pieces of the solid outer crust that move on the somewhat plastic top layer of the mantle are called:

• tectonic plates

• Pangaea

• mid-ocean ridges  

• superposition

Tags

NGSS.MS-ESS2-3

Alfred Wegener  laid the foundation for this scientific theory:

• superposition  

• continental drift

•  volcanism

• radiometric dating

Tags

NGSS.MS-ESS2-3

The name given to the single landmass thought to have broken up into the present continents is:

• Pangaea

• Eurasia

•  Gondwana    

•  Laurasia

When two tectonic plates push together, they form a:

•  divergent boundary

•  transform boundary

• convergent boundary

Tags

NGSS.MS-ESS2-3

When two tectonic plates push away from each other they form a :

•  divergent boundary 

•  transform boundary

• convergent boundary

Tags

NGSS.MS-ESS2-3

When two tectonic plates slide past each other horizontally they form a:

•  divergent boundary

•  transform boundary

• convergent boundary

Tags

NGSS.MS-ESS2-3