Plate Tectonics & Earth's Surface Crossword Puzzle

QUESTIONS LIST:

• mid ocean ridges : this is a location on the ocean floor where plates are diverging, and is where new lithosphere is being formed.
• rift zones : this is another term for mid-ocean ridges.
• african rift valley : this is the largest continental crack in earth’s crust.
• zambezi : the african rift valley runs from turkey, along the dead sea & red sea, through eastern africa, south to the _ river – a total of about 10,000 km.
• subduction zone : this is the term for the area where one plate is forced to slide underneath another plate.
• ocean trench : this is the term for the very deep area of collision between two plates that converge where the denser, diving plate pulls down the leading edge of the plate it came up against.
• converging : at this type of plate boundary two plates of different density move toward each other, and the plate with higher density will be forced to slide underneath the other.
• destructive : this is another term for a converging plate boundary.
• ocean plate : when a continental plate meets an oceanic plate, the denser _ _ dives down into the mantle.
• island arcs : when two equally dense oceanic plates converge, eventually one plate will go down into the mantle and excess material will re-surface to form a string of volcanic islands known as this.
• philippines : the islands of this country are an example of an island arc.
• tonga islands : this string of islands is an example of an island arc.
• fold mountains : when both converging (colliding) plates are less dense continental plates, they buckle upward to form these.
• himalayas : these fold mountains are the largest and highest mountains in the world.
• rockies : these largely fold mountains border b.c. & alberta and run southward into the u.s.a, covering over 5000 km.
• orogenesis : this is the term for the mountain-building process.