Making biltong

Aim: I want to find out how to make biltong

hypothesis: the salt will dry the meat and kill bacteria thanks to its salty environment

research: Salt kills some types of bacteria  This process requires you to rub salt into meat to get the salt concentration to 20 percent or higher. ... You then add in your food, usually vegetables and meats, and this will both prevent bacterial growth and kill most bacteria already on the food. Source from Google

Method:

Equipment:

• Tablespoon of salt
• Strip of beef
• Flavorings (Spices, Chilli and Pepper, etc)
• Fishing line + Hooks
• Bowl
• Knife

Instructions:

1. Wash hands with soap
2. Get your equipment ready
3. Mix salt and flavorings in a bowl
4. Put the meat in the bowl and rub the salt into it
5. Use the knife and cut a hole in the top of the meat

The Greenhouse Effect

The Greenhouse Effect
By Elias

Materials
1. 2 plastic bottle
2. 1 Teaspoon Baking Soda and Citric Acid
3. 2 heat lamp
4. 2 Thermometer
5. 100 ml water
6. 1 rubber bung

Steps
1. Collect 2 bottles 2 lamps and 2 thermometers from the teacher.
2. set up bottles and lamps beside a powerpoint on a flat surface.
3. Pour 100ml water and baking soda mixture into one of the bottles. add just water to the second bottle 
4. Start to record your findings taken from bottle thermometers. these must be every 5 minutes. 

Findings:

Minutes	Bottle 1: Water	Bottle 2: Co２ Gas
0	18	18
5	25	30
10	22	24
15	22	25
20	23	27
25	25	29

Conclusion: the temperature of the CO₂ bottle rose higher  than the normal bottle. this is showed that CO₂ heats up our atmosphere very fast.