science

4. a valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
5. continually adds new material to the ocean floor
9. heat transferred by the movements of currents within a fluid
12. continents slowly moved over Earth's surface
13. the transfer of energy through space

1. an undersea mountain chain where new ocean floor is produced
2. currents the flow that transfers heat within a fluid
3. a device the bounces sound waves off underwater objects and records the echos of these sound waves
6. the process by which ocean floor sinks beneath a deep ocean trench and back into the mantle
7. a measure of how much mass there is in a volume of a substance
8. is any trace of an ancient organism that has been preserved in rock
10. heat transfers within a material or between materials that are touching
11. the continents drifted together to form the super continent