Science Study Guide Using Earth’s Resources Directions: Write the word or words that best completes each sentence in the spaces below. Words may only be used once. Conservation Nonrenewable Resource Sedimentary Rock Igneous Rock Renwable Resource Solar Energy Pollution Natural Resource Mineral Sediment A resource that can be used over and over is a (p. 253) Renewable Resource Tiny bits of rock or dead plant and animal matter is called (p. 232) Sediment A rock that is formed from layers of sediment is called a (p. 232) Sedimentary Rock Harmful things in the air cause (p. 264) Pollution Melted rock cools and hardens, forming (p. 231) Igneous Rock Making resources last longer is called (p. 266) Conservation A material on Earth that is necessary or useful to people is a (p. 244) Natural Resource Energy from the sun is called (p. 254) Solar Energy Salt is a type of (p. 228) Mineral A resource that takes millions of years to form and cannot be easily replaced is a (p. 253) Nonrenewable Resource Directions: Circle the letter of the best answer for each question. Which is NOT a gem? (p. 234) A. B. C. D. diamond slate ruby topaz What is water that is held in rocks below ground called? (p. 261) A. B. C. D. Groundwater Aqueducts Fresh water Reservoirs Which mineral property is identified by how light bounces off of it? (pg. 229) A. B. C. D. Hardness Streak Luster color What are the impressions that living things leave behind in the mud called? (p. 250) A. B. C. D. Casts Remains Fossils Imprints Which part of the soil works like a sponge? (p. 240) A. B. C. D. Bedrock Humus Subsoil Sand