SSA Review (Earth's Structures: Big Idea 6)

Front

What is weathering?

Back

Weathering is the breaking down of rock at or near Earth's surface.

Front

What is chemical weathering?

Back

Chemical weathering is the process where substances in water cause rocks to dissolve.

Front

What is the oldest rock formation identified on Earth?

Back

The oldest rock formation is found on the shoreline of Hudson Bay in Canada, formed 4.28 billion years ago.

Front

What do scientists need to determine the age of a rock accurately?

Back

Scientists need to know the amount of each radioactive element present in the rock.

Front

What is deposition?

Back

Deposition is a process that builds up Earth's surface by dropping sediments.

Front

What event most likely causes deposition to occur?

Back

A glacier melting is an event that most likely causes deposition.

Front

What layer of Earth contains the greatest amounts of dense, solid iron and nickel?

Back

The inner core contains the greatest amounts of dense, solid iron and nickel.

Front

What type of rock is formed from molten rock that hardens?

Back

Igneous rock is formed from molten rock that hardens.

Front

What happens to metamorphic rock subjected to intense heat and pressure?

Back

It can melt and become igneous rock if it rises and hardens.

Front

What is the difference between igneous and sedimentary rock?

Back

Igneous rock forms from cooled molten rock, while sedimentary rock forms from compressed sediments.