<p> 7th Grade Science Earth Rocks Revision</p><p>Name ______Test dates RYG: 14th April, BO: 15th April Revision Resources 1. Your exercise book and binder (look at the topic sheet for an overview of the topic. The soil calculations sheet is a good summary for the soil experiments.) 2. Unit 1 of the text book 3. Green.msscience.com Unit 1 self check quizzes 4. Brainpop (login: acsuk, password: acsschools). Useful videos include: Soil, weathering, erosion, rock types, rock cycle, mineral identification and Earth’s structure.</p><p>Other ideas______Vocabulary Match the words below with their definitions in the table. Calcite, eutrophication, fallow, fertile soil, fertilizer, density, mineral, rock, nutrient, erosion, mantle, igneous rock, metamorphic rock, sedimentary rock. Eutrophication The enrichment of a water system with nutrients leading to an excessive growth of algae.</p><p>Fertile soil A soil rich in nutrients that is able to support plant growth. nutrient A chemical necessary for plants to flourish e.g. NPK (make sure you know what NPK stands for.) erosion Impact from wind, sea, rivers and rain etc. causes rocks to be worn away (also make sure you know the order of rock cycle part 1 and understand the meaning of the other words involved.) density Mass per unit volume of a substance. mantle The layer in the Earth between the outer core and the crust (also make sure you know the names and positions of the other layers of the Earth.) mineral Naturally occurring, inorganic solid that has a definite composition and crystal shape. rock Hard substance composed of one or more minerals.</p><p>Calcite The mineral whose chemical name is calcium carbonate. Chalk, marble and limestone are all examples of this mineral. Metamorphic A rock formed under heat and pressure.</p><p>Igneous A rock formed when hot magma cools and hardens.</p><p>Sedimentary A rock formed when sediments are pressed and cemented together. Fertilizer Natural or artificial substance added to a soil to make it more fertile. Fallow Leaving a field empty of crops.</p><p>JS2010 Earthrocksrevision The Rock Cycle a) How can an igneous rock be directly changed into a sedimentary rock?</p><p>Igneous Rock -> weathered and eroded -> sediments -> compaction and cementation -> sedimentary rock______b) How can an igneous rock be directly changed into a metamorphic rock?</p><p>____igneous rock -> heat and pressure -> metamorphic rock___</p><p>Experiment Revision Match the experiment to the key equipment and/or chemicals it requires. You should know how to carry out each of these experiments and be able to interpret any results obtained.</p><p>Streak test Hydrochloric acid Hardness Mass balance, oven Test for calcite pH paper Density of a rock Mass balance, Bunsen etc. Air in soil Measuring cylinder and mass balance Water in soil Fingernail, glass, nail, steel file pH of soil Streak plate Organic matter in soil Two measuring cylinders</p><p>My Revision Plan:</p><p>Activity Date Time needed</p><p>Note: If you have any worksheets missing (including this one), you can find them in Ms. Levine’s wikispace or in the Extra’s bin.</p><p>Test Essentials: A good breakfast and enough sleep, pen, pencil, ruler, calculator, water, translating dictionary (if English is not your first language). </p><p>Extra Help Sessions Before The Test: AFTER SCHOOL: Monday April 11th and Thursday April 14th (3:30pm-4pm) RECESS A: Tuesday April 12th and Thursday April 14th (11:20am-11:50am)</p><p>JS2010 Earthrocksrevision</p>