Keona's Earth Science Vocab Flashcard Part 1

Front

Crust + upper mantle = ...

Back

Lithosphere

Front

Basic units of geologic time scale?

Back

Periods

Front

Hotter material is less dense and will rise.

Back

Less, Rise

Front

Hot dense ball of mostly iron?

Back

Inner Core

Front

Not evidence for continental drift:

Back

Climate Change

Front

Sea-Floor spreading occurs at...

Back

Mid-Ocean Ridges

Front

Subduction occurs at...

Back

Deep-Ocean Trenches

Front

Divergent boundaries create...on land

Back

Rift Valleys

Front

If two oceanic plates collide, which is subducted?

Back

The older, colder, denser one.

Front

Approximate age of Earth?

Back

4.6 billion years old