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The pebbles because silt and clay settles so slowly through water that some tiny particles take centuries to reach the bottom when pebbles go straight down.
You have to make a couple of assumptions here!
1) The material forming the sand and the pebble has roughly the same density
2) They are both sinking through the same fluid
This is because the maximum sinking velocity (Vs) is controlled by Stokes' law:
Vs = (( g x R2 x (Dp - Df)) / (18 x n))
Where
g = gravitational acceleration
R = particle radius
Dp = particle density
Df = fluid density
n = fluid viscosity
From the above it follows that if the density of the particles is the same and the fluid through which they are falling is the same then the only other variable is the radius. As this is on the top of the fraction, the larger it is, the larger the particles velocity.
What else can I help you with?
Which one is the smallest one to sink boulders pebbles sand and silt?
Silt is the smallest particle size of boulders, pebbles, sand, and silt. It is finer than sand, pebbles, and boulders, which allows it to settle at the bottom first when suspended in water and has a low settling velocity.
What will happen if pebbles and sand mix together?
gravel forms
Does a pebble float?
Most pebbles will sink in water because they are denser than water. Some types of pebbles may have air pockets that allow them to float briefly before sinking.
How do you separate pebbles from mud?
The simplest way to separate pebbles from mud is to use screen made from an appropriate sized mesh hardware cloth. Mount the screen material in a frame and wash the mud through the screen, leaving the pebbles in the screen.
What happens to sand when it gets wet?
Some of the sand will sink to the bottom of the water. There is no chemical reaction. However, some of the sand may go into suspension, making the water muddy. This is a physical change that can be reversed by filtering the muddy water.
Which sediments grains sink faster pebbles or sand?
Pebbles, because it takes for energy for the pebble to sink and so the pebbles are hevier and sink faster then the sand grains
Which sediment grains sink faster pebbles or sand grain?
Pebbles sink faster than sand grains due to their larger size, weight, and density. The larger surface area of pebbles compared to sand grains experiences less resistance as they sink through the water, allowing them to fall more quickly. Sand grains, being smaller and lighter, have a larger surface area that creates more friction with the water, slowing down their sinking rate.
Which sink faster pebbles or sand?
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.
Which one is the smallest one to sink boulders pebbles sand and silt?
Silt is the smallest particle size of boulders, pebbles, sand, and silt. It is finer than sand, pebbles, and boulders, which allows it to settle at the bottom first when suspended in water and has a low settling velocity.
Do pebbles and sand drop to the bottom of water to form a mixed layer?
Yes, pebbles and sand are denser than water, so they will sink to the bottom. Over time, they can form a mixed layer as the smaller particles settle in between the larger pebbles.
Why when you walk on dried sand you sink?
When you walk on dried sand, you sink because the grains of sand are not tightly packed together, so they easily shift and move under the pressure of your weight. This causes the sand to lose its stability and support, making you sink into it as you walk.
What should you do if you get caught in quick sand?
Don't move as it will make you sink faster.
Why did the pebbles settle at the bottom of the glass container?
Pebbles settled at the bottom of the glass container due to gravity. Gravity pulls the denser pebbles downwards, causing them to sink to the bottom while displacing water or lighter materials to rise above.
When you walk across dry sand you sink when you walk across wet sand you do not sink why?
As the dry sand is loosely packed/coupled with each other thus the substancial force which are required to hold each granual is less as compared to the wet sand. when the sand is wet the forces of attraction increases as the each granual of the sand is easily coupled increasing the substancial force. thus a person can walk over wet sand rather than on a dry sand
What will happen if pebbles and sand mix together?
gravel forms
Why do you sink when you walk on sand dunes?
Sand dunes have loose and shifting particles that cannot support your weight evenly. When you walk on sand dunes, the grains of sand move and shift beneath your feet, causing you to sink. This sinking occurs because your weight presses down on the sand, causing it to compact and displace outwards.
Is it true if you move in quick sand you will sink quicker?
No, the speed at which you sink in quicksand is determined by your body density and the viscosity of the sand, not by your movements. Struggling can actually make you sink faster due to increased agitation of the sand particles, causing you to sink deeper into it. It's best to remain calm and slowly try to spread your weight to increase your chances of floating.
