Y E A R 8 – E C O S Y S T E M S

MEASURING ABIOTIC FEATURES OF AN ECOSYSTEM

AIM & HYPOTHESIS

• AIM: To measure the different abiotic features of an ecosystem.

• HYPOTHESIS: Write your hypothesis here.

EQUIPMENT

• Pond water• Tap water• Test tube• Measuring cylinder• Universal indicator• pH chart• Thermometer• Stopwatch

RISK ASSESSMENT

Risk Injury Prevention

Write down all the risks in your experiment.

METHOD

Part 1: Acidity of tap water and pond water

1. Add about 3 mL of tap water in a test tube. Add about 3mL of pond water in another test tube.

2. Add 2 drops of universal indicator in your test tubes.

3. Using a pH chart, work out the pH of your samples. The smaller the number the more acidic it is.

METHOD

Part 2: Measuring air temperature

1. Using a thermometer measure the temperature of air at ground level.

2. Wait 2 minutes before recording your results.

3. Repeat the measurement but this time at bench height. Wait 2 minutes before recording your results.

METHOD

Part 3: Measuring soil temperature

1. Using a thermometer measure the temperature of soil at near the stage. You can do this by inserting the tip very gently into the ground.

2. Wait 2 minutes before recording your results.

3. Repeat the measurement but this time in the oval. Wait 2 minutes before recording your results.

RESULTS

  pH   Temperature   Temperature

Tap water   Ground   Stage soil  

Pond water   Bench Height   Oval soil  

Write a heading for each table:

CONCLUSION

• Write your conclusion here.