Question Outcome Label each of the layers of the Earth: Crust 1 1 Mantle Outer core Inner core 2 1 3 1 4 2 5 2 6 2 7 3 8 4 Which layers are solid and which layers are liquid? The crust and inner core are solid. The mantle and outer core are liquid. Which layer is hottest and which is coolest? Hottest is the inner core. Coolest is the crust. What material is the inner core made of? Iron Draw the type of movement that occurs at a transform boundary between tectonic plates What is the difference between a convergent and divergent boundary of tectonic plates? The plates at a convergent boundary are moving towards each other. The plates at a divergent boundary are moving away from each other Label the below diagram of a volcano 1 - Lava 2 - Ash cloud 3 - Cinders 4 - Igneous rock (cooled lava) 5 - Magma 7 6 - Crust 7 - Vent What property of lava determines whether a volcano forms into a shield or cone shape? Viscosity (high viscosity makes cone shaped volcanos as it does not flow as well) Using the key words below to describe what causes tectonic plates to move (density, temperature, convection). Draw a diagram to aid your description. As the temperature of a liquid increases, it becomes less dense. As it cools it becomes more dense. Less dense liquids rise and denser liquids fall. This movement of liquid is called convection currents and causes the tectonic plates to move at the same time. 9 5 10 5 11 6 12 6 13 7 14 7 15 7 16 8 17 7 Name the device used to measure earthquake severity Seismograph or seismometer What causes earthquakes? Tectonic plates that are moving past one another may get stuck and eventually cause a fault to release all the stored energy. What are the three types of folds? Draw a picture of each one. Anticline Monocline Syncline Which type of fault causes the surface of the land to be shortened? Which type of fault causes the surface of the land to be increased? A compression fault shortens the surface. A tension (or extension) fault increase the surface Which layer of the Earth is prone to weathering and erosion? The crust "Weathering and erosion are different words for the same thing" What is wrong with the sentence above? Explain Weathering is the process of breaking down rocks. Erosion is the movement of sediments and rocks. These are different things. List the following methods of weathering as physical (mechanical) or chemical 1. Rain bombarding a rock surface - Physical 2. Large changes in temperature - Physical 3.Chemicals in a river dissolving rocks - Chemical 4. Sand in a river grinding against rocks - Physical 5. Water freezing into ice, causing expansion - Physical 6. Acid rain - Chemical Name two natural processes that can cause erosion. Wind, water Read the below paragraph and fill in the blanks Weathering takes place as rocks are broken down into progressively smaller pieces by the effects of weather. These pieces do not move to a new location, they simply break down. Weathering is caused by water, as it freezes and thaws, as well as by chemical reactions that loosen the bonds holding rocks together. Weathering is most common at the surface where exposed bedrock meets the atmosphere. 18 9 19 9 List three properties that all minerals must have: 1. Naturally occurring 2. Solid 3. Chemical compound (one or more elements joined chemically) Which of the following are minerals? Gold, Quartz, Marble, Ice, Water, Air, Limestone, Below is Moh's Scale of Hardness Hardness Mineral 20 10 21 10 22 11 1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Feldspar 7 Quartz 8 Topaz 9 Corundum 10 Diamond Approximate the hardness, using the scale above, of the following materials: 1. Material A scratches fluorite and is scratched by apatite. ~ 4.5 2. Material B scratches everything softer than Topaz ~ 8 3. Material X Supreme scratches calcite and apatite and is scratched by quartz and diamond ~ 6 Johnny rubbed a crystal of yellow topaz against a plate which left a white mark behind. Johnny told Sally to write down that the colour of the topaz must be white. Do you agree? Why/Why not? The colour of the topaz is yellow. Johnny should have said the streak of the topaz is white. List three properties that all rocks must have: 1. Naturally occurring 2. Solid 3. One or more minerals joined physically Fill in the appropriate word in each of the boxes. Rocks Formed by cementing of smaller particles 23 11, 12, 13, 16 Formed by heat and pressure Formed by cooling of molten rock Sedimentary Igneous Cooled on the surface Extrusive Metamorphic Cooled under the surface Intrusive What can affect the size of the crystals found in a rock? Where do you think the largest crystals form? The rate of cooling affects crystal size. The largest crystals are formed deeper underground as they are closer to the hot mantle which causes them to cool down slowly. Draw and name two crystal shapes. 24 Cubic 25 Rhombohedral 15 Triclinic Weathering Deposition 26 16 The pictures on the left represent the four stages of forming sedimentary rocks. (note: nature doesn't use trucks!) Put a word in each box which describes each step. Erosion Cementation 27 17 28 18 29 19 30 20 31 21 Fill in the blanks in the table below which refers to the rock cycle Starting type of rock Process Final type of rock Igneous Heat and Pressure Metamorphic Metamorphic Weathering and Erosion Sedimentary Sedimentary Melting and solidifying Igneous Metamorphic Heat and Pressure Metamorphic Igneous Weathering and Erosion Sedimentary Label the following types of fossils as cast, mold, trace or true form Foot print in rock - trace Imprint in rock showing a shell shape - mold Petrified (turned to stone) dinosaur bone - cast Egyptian mummy - true form Egg shells - trace Insect preserved in sap - true form Arrange these steps in the correct order required to make a cast fossil: 1. Organism dies 2. Organism is buried quickly under sedimentary rock 3. Soft tissue decays 4. Bones washed away by water action 5. Mold fossil replaced by minerals into shape of bones by water action Write down what the "law of superposition" means. The law of superposition states that layers (strata) of rock are oldest at the bottom and youngest on the top Comparing the two profiles of rock strata from different sites below, answer the following questions. 1. Which layer is the oldest? ******* 2. Which layer is the youngest? AVAVAVA 3. Each fossil is of a type of fish that lived from 1.5 million years ago up to 500, 000 years ago. Which layers were formed while the species of fish lived? OOOOOOO WMWMWM :::::::::::: //////// IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII AVAVAVAVAVAVAVAVA OOOO--FOSSIL--OOOO IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII WMWMWMWMWMW WMWWMWMWMWM ////////////////////// :::::::::::::::::::::::::::::::::::: ******************* ///////--FOSSIL--//////// Name the three steps of soil formation.Describe what occurs in each step. 32 22 33 23 Fragmentation - parent bedrock is broken into smaller pieces by weathering Softening - water mixes with fragments and turns them into clay Darkening - humus, air and water mix with subsoil turning it into darker top soil. Some of the major constituents (parts) of soil are humus, water and air. Describe why each of these constituents are beneficial to have in soil. Humus - decomposing organic matter provides nutrients for plants Water - necessary component of photosynthesis for plants Air - contains oxygen and carbon dioxide which are needed by plants as they grow from seed