Berry List of Biology Experiments (PEKA) Form 4 (Part 9 – Final)

by BerryBerryTeacher

in Berry Experiment (Experiments & PEKA)

This post is the list of PEKA experiments for SPM Biology Form 4 from Berry Berry Easy. It is advisable that students read all of these experiments from Chapter 9: Endangered Ecosystem before heading in so as to be better prepared. So do read this post.

Berry List of Biology Experiments (PEKA) Form 4 (Part 9 – Final)

peka-spm-biology-chapter-9

Chapter 9 – Endangered Ecosystem

List of PEKA experiments:

  1. Comparing solid pollutants in the air of different environments
  2. Investigating the level of pollution in several different sources of water
  3. Formulating strategies to reduce the level of air and water pollution at a particular location
  4. Caring for an ecosystem in school: fish pond, a wildlife garden or a herbal garden
  5. Planning and conducting a programme related to the management of an ecosystem
Number Activity 9.1 (Experiment)
Pg. 127
Title Comparing solid pollutants in the air of different environments
Aim / Objective of the Study To compare solid pollutants in the air of different environments
Problem Statement Does the air of different environments contain the same amount of solid pollutants?
Hypothesis The air of different environments does not contain the same amount of solid pollutants. / The air from the most polluted environment has the highest amount of solid pollutants.
Variables
  • Manipulated variable: Air from different environments
  • Responding variable: Amount of solid pollutants present
  • Fixed variable: Time and size of cellophane tape
Material
  • Cellophane tape
Apparatus
  • Slides
  • Petri dish
  • Microscope
Technique used Observe the amounts of solid pollutants with a microscope

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Number Activity 9.2 (Experiment)
Pg. 128
Title Investigating the level of pollution in several different sources of water
Aim / Objective of the Study To investigate the level of pollution in several different sources of water.

  • Industrial area
  • Housing area
  • From the hill / river
  • Distilled water (control)
Problem Statement What is the level of pollution in several different sources of water?
Hypothesis The water sample from the housing area drainage is the most polluted.
Variables
  • Manipulated variable: water samples from different sources.
  • Responding variable: Time taken for methylene blue solution to decolourise
  • Fixed variable: Volume of water sample, size of reagent bottles, concentration and volume of methylene blue solution
Material
  • Methylene blue solution
  • Water samples
  • Distilled water
Apparatus
  • Reagent bottles (250 ml) with stoppers
  • Beakers
  • Syringes
  • Stopwatch
Technique used Measure and record the time taken for the methylene blue solution to decolourise by using a stopwatch

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Number Activity 9.3 (Project)
Pg. 130
Title Formulating strategies to reduce the level of air and water pollution at a particular location
Aim / Objective of the Study To formulate strategies to reduce the level of air and water pollution at a particular location
Material
  • Paper
  • Notebook
Apparatus -
Technique used Prepare action plan and predict the types of environmental problems that may arise from the development plans.

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Number Activity 9.4 (Project)
Pg. 132
Title Caring for an ecosystem in school: fish pond, a wildlife garden or a herbal garden
Aim / Objective of the Study To care for an ecosystem in school: fish pond, a wildlife garden or a herbal garden
Technique used Write report on the communities which form the ecosystem, activities carried out to care for the ecosystem, activities carried out to improve the ecosystem and problems faced in managing and maintaining the ecosystem.

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Number Activity 9.5 (Project)
Pg. 133
Title Planning and conducting a programme related to the management of an ecosystem

  • Environment Day
  • Environment Week
  • Plant A Tree Day
Aim / Objective of the Study To plan and conduct a programme related to the management of an ecosystem
Material
  • Paper
  • Notebook
  • Computer
Apparatus -
Technique used
  • Carry out programme as planned
  • Prepare Power Point presentation
  • Making bookmarks, cards, booklets, posters and a scrapbook
  • Organise seminars or forums
  • Organise exhibitions
  • Hold quizzes
  • Publish a bullentin
  • Start or join a nature club

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