Alpine ski bindings are held onto the ski with special binding screws, usually four for the toepiece and four or five for the heelpiece. All new bindings come with screws, but if you have used ones that you need to remount, they will have binding screws at a ski shop. It's best to leave the mounting to a shop, since drilling the holes accurately requires a special jig provided by each binding manufacturer. A waterproof epoxy is applied to each screw when installed, to seal against water and prevent the screws from working loose.
That depends on what you mean by regular bindings. You can use cross-country bindings but not alpine bindings.
There are different types of binding for different types of skiing. Alpine ski binding fasten the boot to the ski at the heel and tow and allows the boot to release during falls. There are three Nordic binding systems for cross country skiing. Cross country skies usually slide a bar in the shoe into a catch.
The bindings come with installation instructions, but if you got used bindings that didn't come with instructions... Quick question: are you putting these on new skis, or on skis that already have bindings on them? If they're old skis, remove the bindings already installed and use the old screw holes for the new bindings. If they're new skis, take them to a ski tech. You've got to drill holes in your skis and there are lots of calculations involved - how much you weigh, the skis being used and the way you ski determine where your boots should be on the ski.
Most likely because there is a bigger chance that you will fall out of your skis while skiing alpine. Also in Cross Country technique sometimes you need to lift up your heel.
Norway or Scandinavia came up with cross-country skiing. The Vikings used it to get to various places. The French later took their idea and put alpine bindings on the skis.
Most don't but usually racing skis do
Yes, but if you can afford either new skis or new bindings, get the new bindings because they'll keep you safer on the slopes.
Quite a bit is different. The gear is different, the skis are straight, as opposed to downhill skis being curved (the curve makes it easier to turn on a downhill slope), the boots in cross country are not stationary in the bindings, as downhill boots are, instead you can move the heels, and the poles used in cross country are longer. Also, the slopes are not nearly as steep as in downhill skiing.
Kids cross country skis are specifically designed to carefully balance the weight of children and to balance it across the skis. This is to protect children and ensure safety.
I have found that some good websites for buying cross country skis are skis.com, xcskishop.com, orscrosscountryskis.com, etc. These are very reputable websites for skis
Ski boots are boots specially made for skiing. It is attachable to skis and bindings. It is made of special materials that will protect your feet from cold. It has a unique design that is design to be controlled easily in snow when attach to your bindings.
Alpine Touring, also known as Randonnée, is a type of backcountry skiing. Randonnée ski bindings are a cross between standard downhill bindings (toes and heels locked in) and telemark bindings (only toes locked in). With randonnée bindings, the skier can clip down the heel piece when skiing downhill (like downhill bindings) and release it when skating or climbing (like telemark bindings). Special ski boots are used with both telemark and randonnée; though, randonnée boots have rigid soles like standard downhill boots. Also, randonnée bindings can release during falls, but telemark bindings cannot. And a skier need not learn to turn differently on AT skis, as with telemark skis, since the heel can be clipped down. As for the skis themselves, AT skis are typically much wider and heavier than a basic ski-area ski, as they are used more often in deep powder and ungroomed conditions; though, randonnée bindings can be mounted to most skis. All Mountain skis are a mid-width type of ski, such that the skier can handle well in both groomed and ungroomed/powder conditions--the latter not as well as with AT skis.