Guide of Report

GENERAL INSTRUCTIONS

• 1.      Before starting practicum should pray first.
• 2.      Students should read the lab instructions that already exist.
• 3.      Before carrying out practicum, student must prepare all the necessary tools and materials at the lab (can be assisted by a teacher or laboratory).
• 4.      Carry out practical work with careful, be careful.
• 5.      If students are less obvious to ask the teacher or lab assistant.
• 6.      Report the results objectively and make an interim report
• 7.      Create and implement a formal report presentation.

SPECIAL INSTRUCTIONS:

•  Before the first lab that conducted the teacher to form groups of 3 to 4 students.
•  Students must perform the above instructions for smooth on each practicum.
•  In each of the percentage of students can use the overhead projector and transparencies or use Power Point (computer / laptop and projector).
• If in carrying out the percentage of time is insufficient, then the percentage passed on to the next meeting

.

WATCHING THE INFLUENCE OF WATER POLLUTION ON THE GROWTH OF ONION (Allium cepa).

A.    OBJECTIVE

1.      Determine the effect of water pollution on the surrounding environment

B.     BECKGROUND

Water pollution can be interpreted as a change of state in a shelter, such as lake water, river, sea and ground water due to human activity. These changes result in degraded water quality to levels that are harmful to water can not be used in accordance provisions. Natural phenomena such as volcanoes, hurricanes, earthquakes etc. It also lead to changes in water quality, but in this sense is not regarded as pollution.

Water pollution, both rivers, seas, lakes and groundwater, is increasingly a problem in Indonesia as air pollution and soil contamination. Getting clean water is not contaminated is not the case easier. Even in the rivers on the slopes of the mountains though.

Water pollution in Indonesia mostly caused by human activities that leave the residential waste, agricultural waste, and waste industries, including mining. Understanding of all residential waste pollutants produced by residential area or home. This includes residential waste organic waste (wood, leaves, etc.), and nonorganik waste (plastics, metals, and detergents).

C.    TOOLS AND MATERIALS

1.      Plastic glass (3 piece)

2.      Stick sate (3 piece)

3.      Red onion  / Allium cepa (3 piece)

4.      Wastewater plant

5.      Water of river

6.      Fresh water

D.    PROCEDURE

1.      Prepare tools and materials that are in need in this lab activities

2.      Label three plastic cups under the name A, B, and C

3.      Put on each plastic glass of clean water, waste water plants, and river water

4.      Punch a hole through the side edges of the plastic cups A, B, and C by using a skewer

5.      Allium cepa puncture using a skewer. Then hang it in a plastic cup that has been in the water content. Where the position of Allium cepa bulbs on touching the water surface.

6.      Observe for 3-day changes that occur in each of Allium cepa

Record the results of observations into a table of observations.