Matching Pairs Unit 9Online version Our planet by Nataly Mollinedo 1 A large piece of ice that moves slowly down a mountain. 2 A large amount of water that covers an area that is usually dry 3 a long period of dry weather 4 A chemical substance found in coal, oil, and gas. 5 The Maldives are very low lying 6 A ridge of rocks or sand just under the water.