12.1.1. Underwater Melting of Icebergs

Try these first

1. 1.

   What fraction of an iceberg is typically submerged below water?

   Hint

   Think about the specific gravity difference.

2. 2.

   True or False: All of an iceberg is visible above the water.

   Hint

   Consider how much of an iceberg floats.

3. 3.

   How much of an iceberg is submerged underwater?

   • 1/2
   • 1/4
   • 7/8
   • 3/4

   Hint

   Think about the ratio of ice volume above to below water.

4. 4.

   True or False: Underwater melting has no impact on iceberg stability.

   • True
   • False

   Hint

   Consider what happens as ice melts; does it stay stable?

5. 5.

   Given varying temperatures and their effects on iceberg melting rates, predict how long it would take for a specific-sized iceberg to significantly lose its buoyancy.

   Hint

   Consider using the formula Q=mcΔT to relate heat transfer to melting.

6. 6.

   Evaluate a hypothetical situation where a newly designed ship must contend with iceberg detection. Propose a technology plan for early warning systems.

   Hint

   Think about integration of existing technologies for safety.