Level 3 · Science S3.7

Speed, forces and pressure

Forces change how things move, and pressure tells you how spread out a force is.

Work out speed and draw it as a graph, add up forces on an object, tell mass from weight, stretch a rubber band and plot the pattern, balance a ruler seesaw, and find out why a knife cuts and a camel does not sink.

Start readingS3.7.1 Speed

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

You are ready for this book if

You can measure a distance in metres with a stick or a string.

Contents

  1. 1Speed, readunderstood
  2. 2Distance and time graphs, readunderstood
  3. 3Balanced and unbalanced forces, readunderstood
  4. 4Mass and weight, readunderstood
  5. 5Stretching and springs, readunderstood
  6. 6Levers and turning forces, readunderstood
  7. 7Pressure, readunderstood
  8. 8Pressure in water and air, readunderstood

Keep it, print it, pass it on

For parents and teachers

For learners who can measure a distance in metres and do sums with the four operations. In many schools this fits children of about 11 to 13, and older learners can use it too. Activities use string, a stick, stones, a plastic bottle, a rubber band, a ruler or a strip of card marked in centimetres, water, and a clock or a counted second. Making holes in a bottle needs an adult with a nail. Walking tests are done away from roads. 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.