Sample Science Test INSTRUCTIONS: Match the correct letter with the description. a. f. k. p. u. minerals cleavage ores luster crystals 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. b. g. l. q. v. streak elements gems igneous intrusive c. extrusive h. lava m. magma r. sedimentary w. sediment d. i. n. s. x. fossils conglomerates metamorphic rock cycle anthracite e. j. o. t. y. sandstone obsidian granite marble limestone Tiny particles of rocks or minerals rocks formed from the remains of once living things on the bottom of the ocean remains of plants from millions of years ago type of rock formed from sediments that become pressed together the natural nonliving substances that make up rocks minerals are made up of these shapes of minerals made by the way their atoms are arranged describes the way light reflects off the surface of a mineral the property that describes the way minerals split identifies the mineral by the color of the powder left behind when it is scratched across a plate rocks that are mined because they contain useful substances minerals prized for their beauty igneous rock formed above the Earth’s surface a shiny black igneous rock a hard igneous rock used in buildings melted rock below the Earth’s surface rock formed from when melted rocks cools and hardens melted rock above the Earth’s surface igneous rock formed below the Earth’s surface bits of sand that become cemented together these rocks are formed by extreme heat and pressure a metamorphic rock that is used as fuel process by which rocks change from one form to another rock used in statues and buildings this rock is made up of rounded pebbles, stones or even boulders once carried by fast flowing waters INSTRUCTIONS: Select the best answer for questions 26-40. 26. Which property best describes a piece of quartz? a. The color purple b. Hard c. Soft d. shiny 27. Which sentence describes how an intrusive igneous rock forms? a. Magma cools and hardens. b. Sediment settle in layers c. Granite settles in layers d. An igneous rock splits in half 28. Which rock is an example of a sedimentary rock? a. Gabbro b. Pumice c. Limestone d. Obsidian 29. Which phrase describes how a metamorphic rock changes into another kind of metamorphic rock? a. Sediment form b. Minerals dissolve c. Heat and pressure change the rock d. magma cools 30. What kind of rock forms when sand is pressed together in layers? a. Metamorphic rock b. Igneous rock c. Sedimentary rock d. Gazbroder rock 31. What are all rocks made of? a. Sand and mud from rivers, lakes, and streams b. Magma or lava c. Nonliving substances called minerals d. Colored pebbles 32. Which physical properties are most helpful to identify minerals a. Size, ability to float b. Luster, streak c. Weight, color d. Crystal shape and width 33. Which kind of rock forms when extreme heat and pressure causes a rock to change form? a. Metamorphic rock b. Igneous rock c. Sedimentary rock d. Gazbroder rock 34. Which mineral is softest? Moh’s Hardness Scale Mineral Hardness gypsum 2 calcite 3 quartz 7 diamond 10 a. Diamond b. Gypsum c. Quartz d. Calcite 35. A rock is soft and has layers. The rock is most likely a. Sedimentary rock b. Igneous rock c. Metamorphic rock d. Gazbroder rock 36. A student predicts sedimentary rocks will absorb water. To test his prediction, he conducts the following experiment. He finds the mass of three samples of rocks. He puts each rock in a plastic cup filled with water for 24 hours. He then takes each rock out and finds the mass of each rock again. His results are below: Sedimentary Rocks Rock Sample Before placed After placed in water in water 1 12 grams 14 grams 2 17 grams 22 grams 3 16 grams 18 grams What did he observe to know his prediction was correct? a. The mass of each rock was the same after being in water b. The rocks changed color after being in water c. The mass of each rock was smaller after being in water d. The mass of each rock was greater after being in water 37. Which kind of rock forms when magma cools and hardens? a. Metamorphic rock b. Igneous rock c. Sedimentary rock d. Gazbroder rock 38. Which statement is false? e. A diamond can scratch any other mineral. f. The mineral quartz comes in only one color. g. The way a mineral splits can be used to help identify the mineral h. A mineral’s streak may be a different color than the mineral. 39. A metamorphic rock may be formed from a. Sedimentary rock b. Metamorphic rock c. Igneous rock d. Any kind of rock 40. Scientist classify rocks based on a. Their physical properties, the minerals they contain, and how they were formed b. Their physical properties, the minerals they contain, and how they are used c. How they are used and how they were formed d. Their size, shape, and color Critical Thinking Questions The following three questions can be completed ahead of time and brought on Thursday, or they can be done during the test. A student can use their notes if they answer the questions at home. But they will not be allowed to use any materials during the test on Thursday. 1. Name two different kinds of sedimentary rock, explain how they are formed. Include what materials each rock are made of. 2. Anthracite coal and bituminous coal are fossil fuels that can be burned to produce heat and electricity. In what way does the term “fossil fuel” describe the origin of these rocks? If people continue to use fossil fuels, why will we eventually run out of them? 3. You find a type of rock you have not seen before. What clues would you look for to determine whether it is igneous, sedimentary, or metamorphic? What would these clues tell you about what kind of rock it is?