Ice concentration is measured in tenths....

🔍 Key Concepts

• Sea ice concentration is expressed in tenths (oktas) from 0/10 to 10/10 • Standard WMO terms like very open pack, open pack, close pack, and very close pack each cover a specific range of tenths • Think about which term would describe an area where most of the water surface is still open, with only scattered ice

💭 Think About

• If ice is only 1–3 tenths, is there more water than ice, or more ice than water? Which descriptive term matches that picture best? • Compare the four terms: which one sounds like almost all water with a little ice, which sounds like half and half, and which sound like mostly solid ice? • Arrange the four terms from least ice to most ice; then match the lowest range (1–3 tenths) to the term at the "least ice" end.

✅ Before You Answer

• Make sure you connect small numerical concentration (1–3/10) with the phrase that suggests least amount of ice • Eliminate any options whose wording suggests ice covering most of the surface (that would match 7–10 tenths, not 1–3 tenths) • Before choosing, mentally picture each term as a sketch: lots of open water vs. almost continuous ice, and match that to 1–3 tenths.

Ice concentration is measured in tenths. What concentration range of ice corresponds to 1- 3 tenths?

Very Open Pack

Close Pack

Very Close Pack

Open Pack

🔍 Key Concepts

💭 Think About

✅ Before You Answer