The Greenhouse Effect☂

Aim: To look at climate change and the greenhouse effect

Materials📋

1x Plastic bottle

1x Teaspoon Baking Soda and Citric Acid

1x heat lamp

1x Thermometer

100 ml water

1x rubber bung︵‿︵‿︵‿︵‿︵︵‿︵‿︵‿︵‿︵‿︵‿︵‿︵‿︵‿︵‿︵‿︵‿︵　　

Steps📝

1. Add 100 mL of water to each of the beakers.
2. Prepare your lamps. Set them up next to each other with the necks angled
   so they will just fit over the tops of the bottles.
   Turn them on so they are ready.
3. Add Baking Soda mix to one of the beakers,
   and immediately cover both beakers with cling a rubber
   bung and thermometer. A tight seal around the edge will work best,
   and make sure thermometers are left visible so you can record the
   temperature.
4. Have students record the starting temperature –
    it should be the same in both beakers.
5. Turn the bottles so the thermometer is visible.                             
6. Record the temperature in both beakers every
   5 minutes for 50 minutes.
   

Minutes	Bottle 1: Water	Bottle 2: CO2 Gas
0	21	21
5	25	18
10	27	22
15	31	25
20	34	25
25	34	28
30	36	30
35	DNF	DNF
40	-	-
45	-	-
50	-	-

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