Fill in the Blanks Plate tectonicsOnline version Plate tectonics by Rachel Scheet 1 1 . The type of crust that underlies the continents is called crust . It is and than oceanic crust 2 . The type found under the oceans is called crust . It is and than continental crust . 3 . The border between two tectonic plates is called a . 4 . All the tectonic plates are constantly ? very ? around the planet , but in many different . 5 . A convergent boundary occurs where two plates are pushing each other . 6 . A divergent boundary marks two plates that are moving from each other . 7 . A transform boundary occurs where two plates past each other .