I WONDER - How Big Is An Iceberg?

Icebergs appear large above water, but 90% of their mass is submerged due to ice's lower density compared to seawater. This hidden mass can be dangerous to ships as it extends beyond the visible portion.

What percentage of an iceberg is typically visible above the water?

• 30%

• 20%

• 10%

• 5%

Why do icebergs float with most of their mass underwater?

• Ice is denser than seawater.

• Ice is less dense than seawater.

• Ice has the same density as seawater.

• Ice is lighter than air.

What is the main danger posed by the submerged part of an iceberg to ships?

• It can cause ships to capsize.

• It is difficult to see and can extend far beyond the visible part.

• It attracts marine life that can damage ships.

• It can melt quickly, causing instability.

How does the density of ice compare to that of seawater?

• Ice is denser than seawater.

• Ice is less dense than seawater.

• Ice is denser than freshwater.

• Ice and seawater have the same density.

What is the primary reason for the majority of an iceberg's mass being underwater?

• The shape of the iceberg.

• The temperature of the water.

• The density difference between ice and seawater.

• The color of the ice.