Water is used to keep slides slippery once an appropriate grease has been applied, but water by itself isn't very effective.
yes the trombone does
That would be the trombone. The trombone has a main slide instead of valves to alter the length of tubing that the vibrating air has to travel through to change the pitch of notes. All brass instruments have tuning slides to slightly lengthen or shorten the tubing length to help tune the instrument.
slides with water
Almost all brass instruments have movable tuning slides, but the only one that is played by moving a slide is the trombone.
The slide have seven different positions. It's used for the Trombone.
All brass instruments (except the sousaphone) have slides. They are used to adjust the pitch, sharp of flat. The instrument that is played using a slide is the Trombone. It also has a slide on the back that is used to tune, or adjust pitch.
a well oiled machine
water, slides, swings, sea-saws, water slides
Yes, Southforest swimming baths have water slides.
Most have 3 or 4 valves except for the trombone which has a slider. There is a bell, a mouthpiece, a water key to let out condensation, and valve slides. The French horn doesn't have valves, it has 4 keys, which do the same thing.
Slides on any valved brass instrument can be adjusted for tuning, but they don't move enough to completely change notes.
Osprey are fish eaters, their heavily oiled feathers repell water when they hint, keeping the feathers from getting waterlogged.