Sieving

The video tutorial explains how fish nets and sieves work to separate items based on size. Fish nets allow smaller fish to escape while retaining larger ones, similar to how sieves separate solids of different sizes. Sieves have various applications, from kitchen use to farming, and can be used with different mesh sizes to separate multiple solids in a mixture. The size of the mesh is crucial in determining which particles or fish are separated.

What is the primary function of a net used by fishermen?

• To catch only the smallest fish

• To separate fish by color

• To allow smaller fish to escape while keeping larger ones

• To catch all fish regardless of size

In what way is a kitchen sieve similar to a net?

• Both are made of metal

• Both are used in farming

• Both separate solids based on size

• Both are used to catch fish

Which of the following is a common use of sieves in agriculture?

• Separating grains from wheat

• Catching insects

• Mixing different types of flour

• Measuring the weight of grains

How can sieves be used to separate more than two types of solids?

• By using a sieve made of different materials

• By shaking the sieve harder

• By using sieves with different mesh sizes

• By using a sieve with a single mesh size

What determines the size of particles that can pass through a sieve?

• The color of the sieve

• The shape of the sieve

• The size of the mesh

• The material of the sieve