Meatballs With Orzo and Italian Vegetables

3 cups potatoes , thickly cut 2 cups onions , wedges 3 cups carrots , thick chunks 2 cups turnips , cut in sticks 2 cups parsnips , thick cut 8 large garlic[...]

1 (14 1/2 ounce) can beef broth 7 ounces uncooked orzo pasta 1 lb frozen cooked meatball 4 plum tomatoes , sliced 1 medium zucchini , cut into cubes 1/4 cup[...]