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th 6 Grade Science Final Exam Thursday, June 7, 2012 1. What is the biosphere? Ch. 1 • The biosphere is…. – the part of Earth in which living things are found. 2. What are abiotic factors? List at least three important abiotic factors. Ch. 6 • Three important abiotic factors within an ecosystem are – water, sunlight, and air. 3. A group of populations that interact with one another in a particular area is called a ___________? (Choose one- biome, community, ecosystem, environment) Ch. 6 • 3. A group of populations that interact with one another in a particular area is called – a community. 4. What happens to a species that cannot adapt to changing conditions in its environment? Ch. 6 • The species may become extinct. 5. An organism that harms another in a symbiotic relationship is a ____________? (Choose one- prey, polluter, parasite, predator) Ch. 7 • An organism that harms another in a symbiotic relationship is a – parasite 6. What is a decomposer? Give an example. Ch. 7 • An organism that gets energy by breaking down the remains of dead organisms is a… – Decomposer (Ex. Mold) 7. What is a consumer? Give an example. Ch. 7 • An animal that cannot make its own food from sunlight. Instead the animal gets energy by eating other organisms is a… – Consumer (Ex. Bear) 8. What is a producer? Give an example. Ch. 7 • A plant directly converts the energy of the Sun into food through photosynthesis. A plant is an example of a… – Producer 9. What do deciduous trees do each year? Ch. 6 • Each year deciduous trees each year – shed their leaves and then grow new ones. 10. Why is the soil of the deciduous forest nutrient rich? Ch. 6 • The soil of the deciduous forest is nutrient rich – because of decayed leaves. 11. In the nitrogen cycle, where do animals get their nitrogen? Ch. 7 • Animals get their nitrogen – from plants 12. List three facts about symbiotic relationships. Ch. 7 • 1. In parasitic relationships, the parasite is helped and the host is harmed. • 2. Both organisms living in a mutualistic relationship are helped. • 3. In commensalism, one organism is helped and the other is neither helped nor harmed. 13. Where are most volcanoes located? Ch. 8 • Most volcanoes are located? – on the ocean floor 14. What do seismographs detect? Ch. 8 • Seismographs detect – ground movement as it occurs in earthquakes 15. Draw a diagram of Earth’s layers. What is each layer made of? Ch. 8 • Earth’s outer core is a – very dense liquid 16. Most of Earth’s mass is in the ___? (Choose one- mantle, core, crust) Ch. 8 • Most of Earth’s mass is in the – mantle. 17. According to the theory of plate tectonics, what may form where plates move together? Ch. 8 • According to the theory of plate tectonics, mountains form where plates move together. 18. According to the theory of plate tectonics, what may form where plates move apart? Ch. 8 • According to the theory of plate tectonics, valleys form where plates move apart. 19. How is a rock different than a mineral? Ch. 9 • A rock is made up of minerals. 20. Which soil layer has the greatest amount of organic material? (Choose one- sand, subsoil, topsoil, parent rock) Ch. 9 • Topsoil has the greatest amount of organic material. 21. Which soil layer would be the least conducive for growing plants? Ch. 9 • Parent rock would be the least conducive for growing plants. 22. Why do farmers plant a cover crop? Ch. 9 • The cover crop reduces the amount of soil erosion. 23. Glacier movement formed which body of water? Ch. 10 • Glacier movement formed – the Great Lakes 24. What is an important difference between erosion and weathering? Ch. 10 • Erosion involves movement of materials from one place to another. 25. What is the main process that has shaped Earth’s surfaces? Ch. 10 • The main process that has shaped Earth’s surfaces is – water running downhill 25. In which state of matter do particles move the slowest? Ch. 13 • Particles move the slowest in a… – solid 26. The amount of space an object takes up is its ______. (Choose one- mass, height, density, volume) Ch. 13 • The amount of space an object takes up is its – volume 27. Describe water vapor. Ch. 13 • An example of water vapor is – gas above boiling water 28. Describe condensation? Ch. 13 • An example of condensation is – little drops of condensed water found on iced drinks in the summer 29. What is the difference between chemical change and physical change? Ch. 13 • A chemical change differs from a physical change because in a chemical change a substance – changes into another substance. 30. Kinetic and potential energy are both forms of ________. (Choose one- solar energy, electrical energy, chemical energy, mechanical energy) Ch. 17 • Kinetic and potential energy are both forms of – mechanical energy 31. Energy stored in the bonds between atoms is ________. (Choose one- kinetic energy, thermal energy, electrical energy, chemical energy) Ch. 17 • Energy stored in the bonds between atoms is – chemical energy 32. What causes the Earth to act like a magnet? Ch. 17 • The Earth acts like a magnet because of – the movement of hot, liquid metal inside Earth 33. On a magnet, where is the magnetic field strongest? Ch. 17 • The magnetic field is the strongest – at both poles 34. Any machine with moving parts will give off heat. Why? Ch. 17 • Any machine with moving parts will give off heat because Friction causes mechanical energy to change to thermal energy. Good Luck • Be sure to study and prepare yourself for your final exam every night and you will do great! Go to be early and get lots of rest, a sleepy mind doesn’t perform well! It’s almost summer and then you can do what you want, but right now you need to study!