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Transcript
8H Quick Quiz On your answer sheet, write in the correct letter for each question. 8 H 8Ha 8Hb 1 Which of these is an example of a sedimentary rock? A soil B limestone C gravel D tarmac 1 Which of the following is an igneous rock? A granite, which is a hard rock with interlocking crystals B chalk, which is made from the remains of sea organisms C slate, which has interlocking crystals arranged in layers D sandstone, which is formed from rounded grains of sand 2 The grains of rock that form sedimentary rocks were formed by weathering and erosion. Which statement is correct? A Weathering breaks up the rocks, and erosion moves the bits away. B Erosion breaks up the rocks, and weathering moves the bits away. C Erosion is caused by chemical reactions. D Weathering happens fastest in dry weather. 3 Sedimentary rock is formed when grains of rock get fixed together by: A compaction and cementation. B squeezing the dry rock grains together. C adding clay particles. D adding water to the mixture. 4 A sedimentary rock is made of very small grains. What does the grain size tell us about the rock? A It will be dark coloured. B The grains were deposited by fast-moving water. C The grains were deposited by slow-moving water. D The rock contains fossils. 2 Igneous rocks are formed when: A magma or lava is put under pressure. B magma or lava cools down. C magma or lava is heated up. D magma or lava evaporates. 3 When an igneous rock is forming: A large crystals will form if the magma heats up quickly. B small crystals will form if the magma cools slowly. C large crystals will form if the magma cools slowly. D small crystals will form if the magma evaporates quickly. 4 According to the particle theory, large crystals will form if: A the particles have time to collect together before they cool. B the particles are kept as far apart as possible. C the particles have time to collect together before they melt. D the particles cool quickly and don’t have time to move apart. Page 1 of 3 Exploring Science M08_ES_AB_Y8_5415_U8H.indd 216 edition 216 © Pearson Education Limited 2008 28/8/08 13:00:27 8H Quick Quiz (continued) 8Hc 8Hd 1 Which rock is a metamorphic rock? A basalt, which is formed when lava cools down B granite, which has interlocking crystals of different sizes C gneiss, which has interlocking crystals in coloured bands D mudstone, which is formed from mud particles stuck together 1 What is a scientific theory? A a description of what a scientist found out in an experiment B an idea that can explain observations and be used to make testable predictions C a prediction of what will happen in an experiment D a story about how the Earth formed 2 Which of these statements is not true? A The Bible describes how some Christians think the Earth was formed. B Most rocks on the Earth are older than 6000 years. C Predictions made using creationism have been tested and are wrong. D Almost all scientists think that creationism is a good scientific theory. 2 Metamorphic rocks are formed by the effects of: A the high pressure and low temperature inside the Earth. B the high pressure and high temperature inside the Earth. C the low pressure and high temperature inside the Earth. D the low pressure and low temperature inside the Earth. 3 Which of the following statements is true? A Marble is formed from limestone. B Marble is not a metamorphic rock. C Slate is formed from granite. D Gneiss is formed from marble. 4 Which statement describes some of the ways in which metamorphic rocks are different from sedimentary rocks? A Metamorphic rocks do not contain crystals and are very porous. B Metamorphic rocks are softer, more porous and have large grains. C Metamorphic rocks may be harder, less porous and have crystals that may be lined up. D Metamorphic rocks are softer, less porous and may contain clear fossils. 8 H 3 Which statement is true? A The catastrophe theory says that all rocks were formed very slowly. B Most scientists agree that the catastrophe theory is a good scientific theory. C Volcanic eruptions are evidence in favour of the catastrophe theory. D There is no evidence in favour of the catastrophe theory. 4 Which statement is true? A The theory of uniformitarianism says that all rocks were formed by sudden events. B Scientists think the theory of uniformitarianism is correct. C Scientists think the theory of uniformitarianism is mostly correct. D The Earth is too young for uniformitarianism to be correct. Page 2 of 3 Exploring Science M08_ES_AB_Y8_5415_U8H.indd 217 edition 217 © Pearson Education Limited 2008 28/8/08 13:00:27 8H Quick Quiz (continued) 8He 1 Which of the following is not part of the rock cycle? A respiration B weathering C rocks getting buried underground D volcanoes erupting 8 H 2 Which list shows rock-cycle processes that all happen quickly? A weathering of rocks, formation of metamorphic rocks B magma cooling underground, floods C landslides, sediments being compressed to form rocks D earthquakes, lava flowing from a volcano 3 Which list shows rock-cycle processes that all happen slowly? A volcanoes erupting, landslides B sediments being compressed to form rocks, weathering of rocks C floods, magma cooling underground D formation of metamorphic rocks, earthquakes 4 Rocks can become buried beneath other rocks when: A physical weathering wears rocks away. B ice transports bits of rock. C the plates that make up the Earth’s surface move apart. D the plates that make up the Earth’s surface push into each other. Page 3 of 3 Exploring Science M08_ES_AB_Y8_5415_U8H.indd 218 edition 218 © Pearson Education Limited 2008 28/8/08 13:00:28