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Ice and Water Change Places

When ice warms up a little, it melts and turns into liquid water. When water gets very cold, around 0 °C, it freezes back into hard ice.

In the picture

  1. Ice cubes: water that is frozen hard and solid
  2. Melting ice: the ice is warming up and turning into water
  3. Liquid water: all the ice has melted, and it can freeze again

Examples

  • An ice lolly melts and drips on a hot day.
  • Water in an ice cube tray turns to ice in the freezer.

Quiz: Ice and Water Change Places (Age 8)

  1. What happens when ice warms up a little?

    • It melts and turns into liquid water
    • It gets even harder
    • It stays exactly the same
  2. At about what temperature does water freeze into ice?

    • About 0 °C
    • About 50 °C
    • About 100 °C
  3. All the ice has melted into water. Can that water turn back into ice?

    • Only if you mix in some new ice
    • Yes, if it gets very cold it freezes again
    • No, once ice melts it stays water forever

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.

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Science, Age 8