The keyboard on the iPad shows different keys depending on what you are doing at the time. If you are entering text into a web URL field, which is what you appear to be doing, the keyboard will look like your screen shot. There will be no space bar because there are no spaces in web site URLS. Once you move the input over to the search field, the space bar will return.
This is just Apple's way of making it more convenient to use the keyboard. By having the most used keys on the main board, it's quicker and easier to get your work done.
Hope this clarifies.
Marilyn