Level 2 · Science S2.5

Forces: friction, falling and floating

Why a sliding stone stops, and why a steel ship floats.

Draw forces as arrows, make a rubber band force meter, test friction on different surfaces, drop things to see how gravity and air act, and find out why a lump of clay sinks but a clay boat floats.

Start readingS2.5.1 Forces are pushes and pulls

8 chapters. Your place is kept on this device only.

You are ready for this book if

You can show a push and a pull and say which way each one acts.

Contents

  1. 1Forces are pushes and pulls, readunderstood
  2. 2Measuring forces, readunderstood
  3. 3Friction, readunderstood
  4. 4More friction or less, readunderstood
  5. 5Gravity and falling, readunderstood
  6. 6Air and water resistance, readunderstood
  7. 7Floating and sinking, readunderstood
  8. 8Shape and floating, readunderstood

Keep it, print it, pass it on

For parents and teachers

For learners who can read short sentences and show a push and a pull. In many schools this fits children of about 8 to 10, and older learners can use it too. Activities use a rubber band, a ruler, stones, paper, a bowl of water and clay or kitchen foil. Water play is in a bowl or bucket, never near deep water. A learner can work alone: every exercise has its answer and the reason for it.

Strand: Forces and motion. Written and drawn by attnom. Free to read, print and share.