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Scientist Activity Badge – Cub



How to earn your badge
Do six activities. You should choose at least one from each of these sections.

For each one, explain or show to a leader what you did and what you found out.

Section 1: reactions

  • Show how vinegar reacts with different items and explain what happens. The different items could be steel wool, sodium bicarbonate or old dirty coins.
  • Find out what happens when you add salt to water.
  • Compare the density of water to the density of other liquids. Show how these liquids react to each other.
  • Make a pH indicator solution. Use it to test the acidity or alkalinity of other liquids.
  • Grow crystals.


Section 2: interacting with energy

  • Create a basic electrical circuit which includes a switch. Show how it could be used to control a lightbulb powered by a battery.
  • Make an air powered balloon rocket or a water rocket. Investigate ways of improving how far it can travel.
  • Make a simple compass. Show the effects of metallic and magnetic materials upon it.
  • Use marshmallows¬† and spaghetti to build the strongest tower you can. Explain how you have improved your design.
  • Find a way to show that hot air rises.


Section 3: living things

  • Set up a wormery or ant colony. Record what happens over three or four weeks
  • Investigate what happens to your pulse rate before, during and after
  • Grow cress, beans, peas or a similar plant. Investigate what happens when the plant has no access to light. What happens when it has light,
    but no water?
  • Find a way to show that plants take water up through their stems.
  • Make some yoghurt and find out how living organisms are involved in
    the process.


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