We think grey water will work best. If grey water works the best, then it is because it has nutrients in it and the mung beans will grow the tallest.

There are 4 resources the plants need to grow: light, water, air, space. Plants normally get the light they need from the Sun. Plants use light energy to make a type of sugar called glucose. They use glucose as their energy source. Air contains many gases like nitrogen, oxygen, carbon dioxide and water vapour. Absorbed by the roots, water travels through a plant’s stems. Water also helps move nutrients from the soil into the plant. Too little water can cause a plant to wilt or droop. All living things need space. Its leaves need space so that they access light. When plants grow too close together, they have to compete for these resources.

Grey is wastewater that comes from our showers, sinks, bathtubs and washing machines. grey water often contains  soap, dirt and food particles.. However , this wastwater is not as dirty as the water found in our toilets (sewage). Greywater is useful. It can be used for cleaning our outdoor spaces, flushing toilets and watering plants. Using greywater for different purposes reduces the need for freshwater. We can easily collect greywater from our sinks or  tubs, and filter it before using it again.

Usually , seeds and beans need a lot of nutrients during their first stage of growth to grow adequately. Mung beans can sprout in water because they contain all the nutrients they need for that first stage of growth. They stay hydrated in the water, soften and start germinating. Putting the mung beans in soil is not necessary at this stage because the bean itself has stored energy to begin growing.

In order to avoid growing bacteria, mold or becoming too acidic, it is important to change the water. If the water is not changed, this may harm the growing beans. The fresher water provides oxygen, prevents harmful buildup, and keeps the environment clean for healthy growth.

Depending on the type of treatment, it can be used for a range of purposes, including garden watering like raspberry bushes, certain fruit trees, such as apples and pears, olives, stone fruit, grapes, and in your laundry. However, greywater treatment systems can be expensive to setup and operate.

To make grey water safer for plants,it can be filtered in a few simple ways: 

1. basic filtering use a mesh strainer or cloth to remove large particles like hair,food bits before reusing water. 

2. Settling method let the greywater sit in a bucket and allow the heavier particles to sink to the bottom. Then carefully pour out the cleaner water that's on top. 

People can also use biodegradable soaps. These plant-safe soaps don't have harsh chemicals and will be less harmful for plants.

Some elements in some types of greywater can actually benefit plants and their growth. For example, the food particles are small pieces of food (like vegetable or fruit scraps) that will decompose in the soil and will act as a natural fertilizer. Also, some soaps contain potassium, which is an essential nutrients for plants. It helps them grow better and healthier by resisting certain diseases. If the greywater contains small amounts of oils or fats, this will help keep the soil a little more moist because it slows down water evaporation. However, if the greywater contains chemicals like chlorine, the plant will  be harmed by the changing ph of the soil. This is why it is important to filter the greywater.

• Turn off taps.
• Take shorter showers.
• Use rainwater for watering plants.
• Fix leaks in pipes and faucets

Calgary experienced a very big break on the Bearspaw South Feeder Main on June 5, 2024. This feeder main is the largest in Calgary's network, and distributes a significant portion of the city's treated water supply. We had to take short showers and not water our lawn we used less water we could not flush our toilets every time.

Water is a limited resource because not all water on earth is drinkable. When we try to conserve water, it helps us prevent shortages, protect the environment, and ensure the living beings have access to it when needed. Trying to conserve water also helps reduce the energy and resources we need to clean and transport drinkable water.

Grape juice contains a lot of sugar. The brand of grape juice we used in our experiment has 16 grams of sugar per 200 ml. When there is a lot of sugar in the grape juice, it can attract bacteria and mold. These two are very unhealthy for the plant growth. Grape juice also lacks important nutrients that plants need and can block water absorption.

Control

the seed all come from the same                  package

 -same spot in the house

 -same container

 -planted at 11:15 am

Independent Variable

-types of liquid 

Dependent Variable

-Length of sprout

step one: ice cube tray with two to three seeds per section.

step two: add two tablespoons of liquid.

three to five days.

Step three: measure sprouts. we moved the mung beans in a sprout tray after they soaked then we put a dark cloth over the mung beans. step four: rinse two times a day for three to five days.  

We put 13 seeds in each liquid and we soaked them in water for a couple of days then we took them out and put them in a different container  so that the roots can go in water not the leaves and the stems. After a few days we measured the roots. We took them out and measured them. 

We made grey water from washing two coffee pots, water bottles and a little drop of dish soap.

Our conclusion is that grey water worked the best for sprouting seeds our hypothesis was right.

Our future application will be that when you do your dishes you can reuse that water it does not hurt the plants and you won't waste water that you drink and your water bills will be lower

• The temperature could be too cold for sprouting
• The sprouts don’t like light so they could have been in sunlight
• A pet could eat some of the sprouts
• Dirty equipment could make the water wrong
• Could forget to change the water every day
• Sprouts could get sick from the environment

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fruit-juice-on-plants.htm#:~:text=Is%20Juice%20Good%20for%20Plants?,plant%20growth%20or%20even%20death.

Is juice good for watering plants.

https://www.youtube.com/watch?v=4MDLpVHY8LE

How to conserve water, Howdini

https://letstalkscience.ca/educational-resources/backgrounders/needs-plants#:~:text=Plants%20have%20specific%20needs%20%2D%20light,Light

The needs of a plant

https://sprouting.com/product/mung-beans/

How to grow bean shoots

https://www.youtube.com/watch?v=yi0hwFDQTSQ

Scientific method videohttps://www.betterhealth.vic.gov.au/health/healthyliving/greywater-recycling-water-at-home

What is grey water and where can you find it?

We want to thank our teacher Mme Boussaha for helping us to come up with a good science fair project. We also want to thank our parents for buying the seeds and the sprout tray. We also want to Mrs Van den Eynden for helping us.