preserving food challengekelvedonacademy.com/wp-content/uploads/ksmtransfer/taylors/... · bear...
TRANSCRIPT
Bear Grylls preserving food challenge.notebook
1
March 26, 2020
Mar 1414:17
PRESERVING FOOD CHALLENGE
Mar 1414:19
Scenario: Utterly Joyous, you look proudly at the fish that you have caught, using a homemade rod, from the nearby stream.
Bear Grylls preserving food challenge.notebook
2
March 26, 2020
Mar 1414:19
Scenario: However, you quickly realise that the fish will soon go off and you must preserve them. You have noticed closeby a mouth of a river which runs into the sea. You can now gather saltwater with your bucket.
Mar 1414:19
Scenario: Luckily, you have gathered some water and fortunately did not drown in the ferocious currents. You know that water contains salt but how do you get the precious salt separated from the water so that you can use it to preserve your fish?
Experiment time!
Equipment at your disposal:
salty water
saucer
sunlight as heat source
(If no sun, then use a hot are in your home to mimic the jungle heat)
cup
Bear Grylls preserving food challenge.notebook
3
March 26, 2020
Mar 1416:41
Scenario: You decide to the pour salt water (solution) into the saucer and plastic cup. You are careful to only put a little amount in. You place the container in the sun light (or other warm area in your home) so that the process of evapouration can begin.
Prediction:
• How long will it take to evaporate?
• What will happen when the water has gone? Why?
Conclusion:
• Were you right? Why
Mar 1414:37
What are the key scientific skills that you have used?
Evaporation
Other scientific terms that we might have come across:
solution soluble insoluble
evaporation filtration distillation