Activity Introduction

Quick summary: Students observe a closed system using a bowl with some water sealed with plastic wrap. They explain their observations and relate their explanations to the water cycle around them

Key lessons and understandings of activity:

  • Water evaporates and condenses. Water moves through the environment. Weather is part of the water cycle.

Australian Curriculum Mapping

Content descriptions:

Year 3 Science

  • Suggest ways to plan and conduct investigations to find answers to questions (ACSIS054)
  • Compare results with predictions, suggesting possible reasons for findings (ACSIS215)
  • Safely use appropriate materials, tools or equipment to make and record observations, using formal measurements and digital technologies as appropriate (ACSIS055)

Year 4 Science

  • Suggest ways to plan and conduct investigations to find answers to questions (ACSIS065)
  • Compare results with predictions, suggesting possible reasons for findings (ACSIS216)
  • Safely use appropriate materials, tools or equipment to make and record observations, using formal measurements and digital technologies as appropriate (ACSIS066)

Syllabus outcomesST2-4WS.

Topic: Water

Year levels: 3 and 4

Indoor or outdoor activity: Indoor

Time required: two times 25 mins

Learning areas addressed: Science, English.

Level of teacher scaffolding required: Teacher assists students with their science investigation. Place plastic shrink wrap over bowls. Move bowls if they are made of breakable glass.

Resources required: Glass bowl or wide jar, plastic wrap, measuring cup (could have two demonstrations or better to have small groups each with a bowl).

Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian Curriculum.

Worksheets

Teacher Worksheet

Teacher preparation

Introduction

In this activity students will observe water droplets forming under the plastic shrink wrap. They will compare two bowls, one with and one without a covering of shrink wrap. Students will explain in their language what they observe. It is important that they use the word evaporation to explain the differences between the bowls.

Activity

Show students a glass bowl. Ask a student to use a measuring cup to pour a measured volume of water into it.

Ask students what will happen to the water in the bowl over the next few days.

Record their ideas.

Take another bowl and ask a student to use the measuring cup to pour exactly the same volume water into it. Ask the student to help cover the bowl in plastic shrink wrap.

Ask students what will happen to the water in the bowl over the next few days.

Record their ideas.

Ask students if they think there will be a difference. How will they know for sure if one or both the bowls have less water?

Observe the bo

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Student Worksheet

Student worksheet not required for this activity.

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