The Strength Of Plat Fibres

Question 1

Controlled variables: 2 things

Answer 1

Length of fibre

Size if each individual mass

Question 2

Dependent and independent variables:

Answer 2

Independent: source& type of fibre

Dependent: mass that can be held

Question 3

Equipment: 8things

Answer 3

Stems of stinging nettles/ celery, bucket, gloves,paper towels, clamp stands, slotted masses and holders, white tile, sharpe knife

Question 4

Outcome expected:

Answer 4

The more fibres combined together the stronger it is

Question 5

Method (4steps)

Answer 5

1. Leave plants to soak in a bucket of water for about a week so fibres are easily extracted, (retting)/
   /1. Celery sticks should be left in coloured water so the fibres are easily seen and pulled out
   2.Connect fibre between 2 clamp stand
2. Add masses in the middle till the fibre snaps
3. Repeat with different fibres and different ways of combining them

Question 6

Evaluation issues: 4 things

Answer 6

Maintaing lengths of fibres, Ensuring consistency when twisting or plaiting, Using fibres if the same age, extracting whole fibres is difficult