Example 1: Separating sand and gravel using sieving
Sieving is commonly used to separate sand and gravel in construction and landscaping projects. The mixture of sand and gravel can be poured onto a sieve, which is a device with a mesh bottom that allows smaller particles to fall through while larger particles are retained on top. By shaking the sieve, the sand particles, which are smaller in size, will pass through the mesh, while the gravel particles will be left behind. This process effectively separates the two components of the mixture based on their particle size.

Example 2: Separating flour and bran using sieving
In the food industry, sieving is often used to separate components of mixtures like flour and bran. When wheat is milled to produce flour, it contains both fine particles of flour and coarser particles of bran. By passing the mixture through a sieve, the finer flour particles can pass through the mesh, while the larger bran particles are retained. This process helps to separate the two components based on their particle size, allowing for the production of refined flour.
In both examples, sieving is a simple and effective method for separating components of a mixture based on their particle size. This technique is widely used in various industries for its efficiency and ease of use.