Drag each tile to the correct box. Not all tiles will be used. Create a summary of the passage by placing the FOUR most important points in the correct order.

1. Most submarines are created solely for military purposes.

2. All submarines must be sure not to descend too far underwater.

3. Sometimes, submarines can be seen from an airplane.

4. Certain submarines have a special chamber for divers.

5. Some submarines are used for oceanic exploration.

6. Submarines either rise or submerge by displacing water.