Ice & States of Matter

Question 1

Why does an iceberg that has broken off a glacier stay floating on the ocean instead of sinking?

Accepted Answer

Because solid ice is less dense than liquid water, so it can float.

Answer

Because ice is made of salty water, which makes it heavier than the ocean.

Answer

Because ice is colder than the water, and cold things sink.

Answer

Because ice contains air bubbles that make it sink.

Question 2

Which statement correctly describes water and what happens when salt is added?

Accepted Answer

Water can be ice (solid), liquid water, or steam (gas). Adding salt makes water freeze at a lower temperature.

Answer

Water can only be liquid or ice. Adding salt makes water freeze faster.

Answer

Water becomes gas when you add salt. Ice is always fresh water.

Answer

Sea ice is thick and fresh, while glacial ice is thin and salty.

Question 3

When a piece of a glacier breaks off and becomes an iceberg, why does it stay floating on the ocean water?

Accepted Answer

Because ice is less dense than liquid water, so it can float.

Answer

Because the iceberg is made of salty water that sinks slower.

Answer

Because ice is colder than the water, and cold things always rise.

Answer

Because the iceberg is lighter weight than the water because it has air bubbles.

Try three questions