Return to Unit List Grade 4 Lesson Review   Type your name:   Earth's outermost layer is made up of solid rock called the centerouter corecrustsolid materialSelect your answer. Below this is the mantle . The rocks in the mantle flow slowly due to the high temperaturesironpressuresolid materialSelect your answer and great pressurecrusttemperaturessolid materialSelect your answer. The liquid layer of Earth, called the crustouter coresolid materialcenterSelect your answer, lies beneath the mantle. This layer is most likely made of melted crustouter coreironsolid materialSelect your answer. Finally, the inner core can be found at Earth's outer corecentercrusttemperaturesSelect your answer. It is a sphere made of solid materialironpressurecrustSelect your answer.