Question

1. based on the description of the icebergs that are calved along the coastline of antarctica, do the icebergs sink or float?

f. sink; they are more dense than ocean water.
g. sink; they are less dense than ocean water.
h. float; they are more dense than ocean water.
i. float; they are less dense than ocean water.

Explanation:

To determine if icebergs sink or float, we use the principle of buoyancy: an object floats in a fluid if its density is less than the fluid's density. Icebergs are made of freshwater ice. Ocean water (saltwater) has a density of about 1025 kg/m³, while ice has a density of about 917 kg/m³. Since ice (icebergs) is less dense than ocean water, it floats. Now let's analyze the options:

• Option F: Says icebergs sink and are more dense than ocean water. Incorrect, as ice is less dense.
• Option G: Says icebergs sink and are less dense. Sinking objects are more dense than the fluid, so this is contradictory. Incorrect.
• Option H: Says icebergs float and are more dense. Floating objects are less dense than the fluid, so this is wrong.
• Option I: Says icebergs float and are less dense than ocean water. This matches the density principle (ice ~917 kg/m³ < ocean water ~1025 kg/m³), so it's correct.

Answer:

I. Float; they are less dense than ocean water.