High, sharply pointed mountains are _____.

• young
• old
• impossible to date
• nonexistent

Earth is compused of _______.

• layers
• blocks
• cubes
• nodules

The innermost section of Earth is the ___.

• inner core
• outer core
• mantle
• crust

The lithosphere is broken into ____.

• rows
• plates
• spheres
• seas

The crust that forms the ocean floor is called _____.

• water crust
• deep crust
• oceanic crust
• land crust

Mountains made of huge, tilted blocks are called ____ mountains.

• fault-block
• upwarped
• folded
• oceanic

Large fractures in rocks along which movement occurs are called plates.

• True
• False

One plate sinking underneath another is called reduction.

• True
• False

It is possible that plates move as a result of conduction in the mantle.

• True
• False

Mountains formed by the folding of rock layers are called folded mountains.

• True
• False