Solve these clues to fill the grid.
- A hypothetical continent including all the landmass of the earth prior to the Triassic period when
- 1 Across
- United States baseball player
- 3 Across
- A geological process in which one edge of a crustal plate is forced sideways and downward into
- 6 Across
- Energy that travels in waves or particles
- 8 Across
- The lower layer of the crust
- 9 Across
- Plutonic igneous rock having visibly crystalline texture
- 11 Across
- How tightly packed the matter in something is
- 12 Across
- The commonest type of solidified lava
- 14 Across
- Hard outer layer of the Earth or of bread
- 15 Across
- Base consisting of a rubber slab where the batter stands
- 1 Down
- The transmission of heat or electricity or sound
- 2 Down
- The solid part of the earth consisting of the crust and outer mantle
- 4 Down
- A measuring instrument that sends out an acoustic pulse in water and measures distances in terms
- 5 Down
- Force pushing on something
- 7 Down
- The remains of a plant or animal that existed in a past geological age and that has been excavated
- 10 Down
- A crack in the earth's crust resulting from the displacement of one side with respect to the other
- 13 Down