SEDIMENTARY ROCKS ARE ROCKS THAT ARE COMPOSED OF LITTLE BITS OF OTHER ROCKS. THERE ARE THREE TYPES OF SEDIMENTARY ROCKS: CLASTIC, CHEMICAL, AND ORGANIC. SEDIMENTARY ROCKS CAN FORM WHEN AN OTHER ROCK BREAKS UP AND GETS PUT UNDER PRESSURE WITH OTHER BITS OF ROCK. USES OF SEDIMENTARY ROCKS ARE: CEMENT, FUEL, BRICKS, AGGREGATE, AND CHEWING GUM COATING.