SeaFloor Spreading - 7BB

Ocean Floor Features Identify the features below using the word:WORD BANK: (spelling counts)mid-ocean ridgeoceanic crustocean trench mid-ocean ridge ocean trench oceanic crust Age of Rock Identify where the rock is the youngest and where it is the oldest in the following figure.WORD BANK: (spelling counts)youngestoldest youngest oldest Sort the descriptions into the correct categories: Mid-Ocean Ridge New crust created Makes igneous rock Thinner and less dense rock Ocean Trench Old crust sinks back into the Earth Also known as a subduction zone Thicker and more dense rock True or False: the age of the ocean floor are mirror image on both sides of the ocean floor. True False Building Vocabulary Using the word bank provided, fill in the blank to complete each statement.Word Bank (spelling counts):mid-ocean ridgesea-floor spreadingdeep-ocean trenchsubduction A canyon on the ocean floor at which the crust bends downward is called a(n)? deep-ocean trench The process that continually adds new material to the ocean floor is called? sea-floor spreading The process by which the ocean floor sinks into the mantle is known as? subduction A chain of underwater mountains along which sea-floor spreading occurs is a(n)? mid-ocean ridge