2. Methods

2.1 Equipment List 

• 36 x mung beans (takes 2 to 3 days to germinate)
• 6 x Plastic containers (with lid) (10.5cm in height, 19cm in breadth and 32cm in length)
• 35ml nutrient water
• 6 x 3.5l normal water
• 12 x Copper strips
• 6 x Black crocodile clip test leads
• 6 x Red crocodile clip test leads
• 6 x 2 slot AA batteries holders
• 2 x 1 slot AA battery holders
• 12 x mesh pots
• 4 x Terminal block
• 12 x small sponges (growing medium)
• 500-ml measuring cylinder
• 12.5-ml measuring cup
• 30 cm ruler
• Bench drill, hole saw (48mm), 15mm drill bit
• 12 x copper strips

2.2 Diagrams of the experimental setup

2.3 Procedures

1. Drill 2 x 48mm holes around 4 cm away from the centre of the lid (Figure 2.2.1)
2. Drill 2 x 15mm holes at the opposite ends of the plastic lid (Figure 2.2.1)
3. Plant 3 mung beans in each sponge and put the sponges in mesh pots
4. Repeat step 1 and 2  for 12 sponges
5. Place batteries in the battery holders and connect them in series with terminal connectors (Figure 2.2.1)
6. Set wiring for the plants (Figure 2.2.1)
7. Put the mesh pots onto the holes in the lid of the container  (Figure 2.2.)
8. Mix the water with nutrient water in the recommended ratio (10ml of each solution for every 1L of water) using a measuring cup
9. Pour mixture into each of the containers, equally, using a 500ml measuring cylinder
10. Stick on 2 opposite ends of the box
11. Connect crocodile clips from the batteries to the copper strips
12. Place the lamps over the plants
13. Repeat step 7 to 13 for the all of the set-ups
14. Leave all the set-ups on for 10 mins daily

2.4 Data Analysis: Describe the procedures you will use to analyze the data/results. 

15. Record the height of the plant from the top of the sponge to the top of the plant using a ruler.
16. Calculate the average height of the top 2 plants’ in each of the set-ups
17. Put the findings in a table
18. Repeat step 15 to 18 to the rest of the set-ups
19. Repeat step 17 to 19 every day
20. Plot the average height in each set-up into a line graph against the time frame to observe the trend of growth

2.5 Risk Assessment and Management  

Risk	Assessment	Management
Accidental consumption of nutrient water for plants	Medium	Avoid touching consumables after contact with nutrient water before washing hands thoroughly
NPK (nutrient water) is dangerous and can cause skin redness, burning sensation on the skin, itchy skin, burning of the nose, eyes, or throat (Amber Erickson Gabbey, 2012)	Medium	Wash hands with soap after using the nutrient water
Accidental inhalation of plastic when drilling holes in the plastic lid of the box	Medium	Hold your breath when drilling
Accidental injury from using power tools like the drill	Medium	Stay clear when from the person using the power tool and be careful at all times
Edges of the cut copper strips are sharp	Low	Handle the cut copper strips properly