A CO2 fire extinguisher is located on the outside of a building in Massachusetts. During the winter months, one can hear a sloshing sound when the extinguisher is gently shaken. In the summertime there is often no sound when it is shaken. Explain. Assume that the extinguisher has no leaks and that it has not been used.
Snaffle bits are the most mild bits, but have a very wide range. Dee, loose ring, and egg butt snaffles are probably the most mild. The mouth pieces can be corkscrewed, double twisted, plain, have a roller mouthpiece, or mullen (a strait bar - can be rubber/metal). Any of the snaffles can be rubber, and can have almost mouthpiece. Full cheek snaffles are a little bit stronger, because they have the bit that covers a wider area, allowing more leverage and control. Curb bits/leverage bits are mores severe. The two main types are kimberwicke and pelham bits. They both have chains that go under your horses chin, and when you pull on the reins, it applies pressure on the chain. The kimberwicke has two different holes to put your reins in; the top is less severe, and the bottom is more. The pelham bit is common in equitation, because you get a lot of leverage and control from it. It's double reined, which makes it look 'fancier' but really isn't as severe as a gag. The gag bits come in two main types: egg but and elevator. The egg butt gag has holes in the top and bottom of the bit, and the cheek pieces go all the way through the holes and connect to the reins. That way, when you pull back, it puts pressure on his poll and picks his head up. The elevator is basically the same thing, and can come in 2-3 rings. It gives you even more leverage, and both gags are used for horses that are heavy on their front end. The last main type of bit is a hackamore. Although it may not really count as a bit, it replaces a bit and is very severe. If it's not in the right hands, you can really hurt the horse and get his confidence and trust down. It's a bitless bridle, but has a lot of leverage and puts a lot of pressure on the poll. Hope I helped!
Lightning always prefers to strike things that stick up in the air and/or are pointed. This is why it is dangerous for you to be out in the open on flat land during a thunderstorm, for example a football field or a golf course. Rather than allow lightning to strike buildings, especially church steeples, lightning rods are run up the side of the building so that, if lightning strikes, it strikes this large metal conductor which conducts the electric charge safely into the ground. For the same reason you should never enter a room which says Danger High Voltage or climb up pylons or over fences into electric power sub-stations - you do NOT have to touch anything to get an electric shock. Just pointing at the supply with your finger could cause a spark of electricity to jump to it - ouch !