Ice & States of Matter
Understand ice in different forms and states of matter — sea ice forms when ocean water freezes (it's salty and relatively thin), glacial ice forms from compacted snow over centuries (fresh water, very thick), and icebergs break off from glaciers and float in the sea; know that water exists as solid (ice), liquid (water), and gas (water vapour), and that salt lowers the freezing point of water
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Ice & States of Matter means sorting ice forms and water states, and knowing salt can lower freezing point. We will practise once together, then check a fresh example.
Spend about 12 minutes sorting states and ice forms, then checking one fresh card.
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Start practiceIce & States of Matter practice
Choose ice forms and water states.
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
NASA Climate Kids · Practice link — not the full lesson
Weather and Climate
Before you open · source notes
Weather and Climate supports Ice & States of Matter. An adult previews and guides; this is a learning page, not a scored quiz.
Free educational page, no sign-in required for the tested path.
Before you openAsk the learner one fact they learned and one question they still have.
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Source, access and review notes
Public NASA Climate Kids page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
NASA Climate Kids. “Weather and Climate.” External page; Gakuva does not copy, host, embed, or redistribute materials.
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Check understanding
- Distinguish between sea ice (frozen ocean, salty, thin) and glacial ice (compacted snow, fresh water, thick)
- Explain that icebergs break off from glaciers and float because ice is less dense than liquid water
- Describe the three states of water (solid, liquid, gas) and explain that salt lowers the freezing point
“Can your child explain the difference between sea ice and glacier ice, and describe how water changes between solid, liquid, and gas — maybe by doing a simple freezing experiment with salt and fresh water?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Polar Regions
- Age range
- Ages 7–9