Because You Cannot See All The Particles In Water.. In Sand You Can See Them.
Example: You CAN See A Grain Of Sand.
SOURCES:
Brain, School, Life,
Pebbles generally sink faster than sand due to their higher density and larger size. Sand particles are smaller and lighter, so they tend to float or settle more slowly in water compared to denser pebbles.
Air travels faster through sand compared to water. Sand particles are more densely packed than water molecules, creating more resistance for water to move through. Air, being a gas, can flow more easily between the sand particles.
Flour particles are smaller in size and have less resistance to pressure compared to sand grains. When a force is applied, the smaller flour particles are more easily compressed and squashed together, whereas larger sand grains are able to maintain their individual structure and resist being squashed as easily.
The compression of wet sand depends on factors like the amount of water present, the size of sand particles, and the applied pressure. Generally, wet sand compresses less than dry sand due to the lubricating effect of water between the particles, but it can still compact under pressure.
You can separate sand from water by using a method called sedimentation and decantation. This involves allowing the sand to settle at the bottom of the container, then carefully pouring off the water. Alternatively, you can use filtration to physically separate the sand particles from the water.
The gravel and sand filter out smaller particles from the water
The smaller pieces formed due to weathering are called sediment or particles. These can range in size from tiny clay particles to larger sand-sized grains, depending on the intensity of the weathering process.
Wind is an agent of erosion that can usually move only sand-sized or smaller pieces of material. Sand dunes are formed when sand particles are transported by wind and deposited in certain areas.
Wind is the agent of erosion that can usually move only sand-sized or smaller pieces, primarily due to its relatively low force compared to other agents like water or glaciers. Wind is most effective in arid environments where loose sand particles can be easily lifted and transported.
The wind erodes rocks by battering other small rock particles against them, like the action of sandblasting.
Clay holds more water than sand and silt. Clay particles are smaller and create a denser structure that can hold water more effectively than the larger particles of sand and silt.
I noticed that soil particles took longer to settle in water compared to sand particles. Soil particles have smaller particles sizes and more organic matter which makes them less dense than sand, causing them to take longer to sink. Sand particles are larger and denser, so they settle more quickly in water.
Boulders broken down by weathering or erosion can form smaller pieces called pebbles or gravel. These smaller pieces can eventually be further weathered into sand particles.
Wind mostly erodes pieces of rock that are the size of sand or smaller. Wind erosion often is evident in areas where there are few plants to hold soil in place.
Sand
Sand can cause weathering through a process called abrasion, where wind or water transports sand particles that then physically wear down rocks through friction. As sand particles rub against rock surfaces, they can slowly break down the rock into smaller pieces, gradually leading to weathering and erosion.
One method to separate sand from salt is by dissolving the mixture in water to dissolve the salt, then filtering the solution to separate the sand from the saltwater. Another way is to use a sieve to physically separate the larger particles of sand from the smaller particles of salt.