Experiment of the Month

 

A terrarium is a container which is designed to hold small plants and animals in controlled conditions. The closed nature of a terrarium creates an environment which is easy to control, allowing people to simulate everything from the desert to the rainforest. ýA terrarium will create a miniature water cycle.

Terrariums replicate the natural environment so some sort of soil, sand, or rock is usually present.ý It is important to control the lighting, temperature, and humidity of a terrarium.

Supplies:

2 liter bottle with lid,

Pebbles or gravel, 1 cup

Potting soil, 2 cups

Seeds, 2 packets

Small plant, 1

 

Water

Clear packing tape, 1 roll

9 oz cups,

Pitcher

Scissors

ý        Cut the top 1/3 off the 2 liter bottle.

ý        Add about 1 cup of pebbles or gravel to the bottom of the bottle to help with water drainage.ý Use the 9 oz cups for scooping.

ý        Add 2 cups of potting soil on top of the pebbles/gravel.ý Use the 9 oz cups for scooping.

ý        Dig holes in the soil.ý Plant seeds and small plant.

ý        Lightly water the soil.

ý        Reassemble the bottle by inserting the top part into the bottom part.ý Make sure the seal is good so water does not escape later on.ý If necessary, tape the two parts together

Taking Care of Your Soda Bottle Terrarium

ý       There are two important factors you have to consider when it comes to your terrarium: the amount of sunlight it gets and the amount of water that is inside.

ý       Once the plants have sprouted you should make sure it gets sunlight but do not leave it in direct sunlight for the entire day. It is a closed environment and it can get very hot inside.

ý       Water - Look carefully at the soil in the terrarium. It should look moist but not soaked or too dry. Beads of water should form on the top inside near edge and these will drip down the sides and continue to water the soil. If it appears to be too wet you can take the top off and leave it uncovered for a day or two.