There are two ways.
First, you can put an auger in the pipeline and move the solids that way. This is rarely done--you see it in grain transport but not much else.
The other way is to use a fluid--either liquid or gas, both of which are considered fluids--to transport the powder.
Pipelines carry oil and natural gas
Yes, you can carry protein powder in your carry-on luggage as long as it is in containers of 3.4 ounces or less and placed in a clear, quart-sized plastic bag.
An electrical conductor is a material that can carry electricity.
Yes, you can carry powder on a plane, but it must be in containers that are 3.4 ounces or less and placed in a clear, quart-sized plastic bag.
They are used to carry gunpowder.
Yes, you can carry chili powder in your carry-on luggage during a flight as long as it is in a container that is 3.4 ounces or less and placed in a clear, quart-sized plastic bag with your other liquids and gels.
Yes, you can bring creatine powder in your carry-on luggage on a plane. However, it is recommended to check with the airline for any specific regulations or restrictions regarding powders in carry-on bags.
Pipelines, trains, trucks, pretty much everything that can carry oil. They use ships too.
Of course they can carry one, that does not mean they are allowed to do so.
Powder flasks were originally used to carry gunpowder. Since relatively few people today have any need to carry gunpowder, powder flasks are generally owned for decorative purposes, or as historical curiosities.
Yes, you can fly with creatine powder in your carry-on luggage as long as it is in a container that is 3.4 ounces or less and placed in a clear, quart-sized plastic bag.
Any/every material can carry sound.