Question 6
Aim: To understand how filtration can result in clearer and cleaner water. Materials: Sieve, paper towel, three beakers, water, soil, beans, glitter, elastic band.
1 Add beans, soil and glitter to a beaker. Then half-fill the beaker with water.
2 Place a sieve over another empty beaker. Pour the water from the first beaker through the sieve. Observe the water.
3 Tear off two sheets of paper towel and fold them over to create a square. Wrap the paper towel over the top of a third beaker. Use elastic band to secure the paper towel in place.
4 Carefully pour the water from the second beaker into the third beaker. Observe the appearance of the water.
5 Repeat the filtration process in steps 2 to 4, until the water is as clear as possible. You can change the paper towel as many times as you need to.
1 Add beans, soil and glitter to a beaker. Then half-fill the beaker with water.
2 Place a sieve over another empty beaker. Pour the water from the first beaker through the sieve. Observe the water.
3 Tear off two sheets of paper towel and fold them over to create a square. Wrap the paper towel over the top of a third beaker. Use elastic band to secure the paper towel in place.
4 Carefully pour the water from the second beaker into the third beaker. Observe the appearance of the water.
5 Repeat the filtration process in steps 2 to 4, until the water is as clear as possible. You can change the paper towel as many times as you need to.
