Study Guide-Science Exam SCIENTIFIC METHOD You should be able to *identify and make observations and inferences *distinguish between qualitative and quantitative observations *write a hypothesis *correctly order the steps of the scientific method *create an experiment or analyze an experiment for possible problems *analyze data, read graphs, create graphs Vocabulary observations, inferences, qualitative and quantitative observations, scientific method, hypothesis, experiments, controls, independent variable, dependent variable, qualitative and quantitative data ATMOSPHERE AND WEATHER You should be able to describe the composition and organization of Earth’s atmosphere. Name and list the layers of the atmosphere in order. Compare and contrast the density, air pressure and temperature of the layers of the atmosphere. Name and describe two types of barometers. Explain all the processes of the water cycle and how they work together to move water throughout the atmosphere. Explain how the water cycle affects weather patterns. Meteorologist – a person who studies the weather http://kids.earth.nasa.gov/archive/career/meteorologist.html Meteorology – the study of the atmosphere and weather patterns http://www.merriam-webster.com/dictionary/meteorology Vocabulary air pressure, molecules, density, volume, atmosphere, altitude, absorb, equilibrium, mercury barometer, aneroid barometer, density, precipitation, condensation, evaporation, percolation, transpiration, runoff, groundwater, water vapor, humidity, relative humidity, capacity troposphere stratosphere mesosphere thermosphere exosphere For more on Earth’s layers: http://www.srh.noaa.gov/jetstream/ atmos/layers.htm nitrogen oxygen initial reliable weather wind expand contract conduction convection radiation local winds global winds Coriolis effect sea breeze land breeze jet stream monsoon global wind belts easterlies westerlies trade winds calm regions doldrums horse latitudes Go here for more information on wind belts and calm regions: http://www.ck12.org/earthscience/Global-Wind-Belts/ pressure gradient pressure gradient force force dew point difference saturated psychrometer cumulus stratus cirrus air masses (continental, polar, maritime, tropical) fronts (cold, warm, occluded, stationary) low pressure system-stormy weather high pressure system-calm, fair weather Gulf Stream Go here for a summary of fronts: http://www.eduplace.com/science/h mxs/es/pdf/5rs_3_8-4.pdf IMPORTANT QUESTIONS Where is the Gulf Stream and how does it affect storms? Why? What is weather? What are the three factors that cause wind? How is heat transferred? Describe three ways and give examples of each one. Compare and contrast the causes and characteristics of global and local winds. Provide examples of each. Define force. Explain how the pressure gradient affects wind speed and strength. Explain the roles of bacteria, precipitation, animals and plants in the nitrogen cycle. How do jet streams affect the weather? How does human activity affect the atmosphere and air quality? Give specific examples. You should be able to make predictions about the weather when given a weather map. What are thunderstorms, lightning storms, tornadoes and hurricanes? Go here for storm information: http://www.weatherwizkids.com/ Reading a Weather Map-Examples with symbols Forces and Motion and Energy You should be able to calculate speed, distance or time using the formula speed = distance/time calculate force, mass or acceleration using the formula force=mass X acceleration interpret and answer questions about distance-time graphs and positiontime graphs describe the position of an object using directions and reference points explain Newton’s Three Laws of Motion. Go here for more information on Newton’s Laws: http://teachertech.rice.edu/Participants/louviere/Newton/ describe each simple machine and how it does work compare and contrast ideal mechanical advantage and actual mechanical advantage calculate ideal and actual mechanical advantage of simple machines explain how an electrical circuit works (complete circuit, power source, etc.) VOCABULARY force motion position reference point speed velocity (speed and direction) Newton’s Law of Motion inertia simple machines lever pulley screw inclined place wedge wheel and axle mechanical energy machine work potential vs. kinetic energy actual vs. ideal mechanical advantage balanced and unbalanced forces friction gravity Word Problems: Speed (rate) = distance / time Force=mass x acceleration LIVING ORGANISMS AND HUMAN BODY You should know how each of these single-celled organisms moves, eats, reproduces and secretes waste. You should be able to compare and contrast any two of them. Volvox Paramecium Euglena Amoeba A cell is the smallest part of any living thing. You should be able to recognize, describe and explain the functions of each of the following cell parts. Found in plant and animal cells Cell membrane Cytoplasm Nucleus Nuclear membrane Mitochondria Golgi bodies ribosomes Endoplasmic reticulum Vacuoles (central vacuole in plant cells) Just in plants Cell wall Chloroplasts The human body (and other animals) is organized into cells, tissues, organs and organ systems. You should be able to explain the relationship between these and compare them to the organization of something else (school, city, building, car, etc.) The human body is organized into organ systems. They all work together to benefit the entire body. You should know the function of each system listed. You should be able to explain how they work together and provide specific examples. Urinary Circulatory Muscular Skeletal Digestive Nervous Endocrine Immune Reproductive Respiratory Asexual Reproduction (one parent) offspring is identical to parent mitosis fragmentation budding binary fission Sexual Reproduction (two parents) offspring is different from parents; gets ½ its chromosomes from each parent sex cells made by meiosis sex cells = gametes = egg and sperm in humans requires fertilization of egg by sperm You should be able to compare and contrast the stages and purpose of mitosis and meiosis. interphase, prophase, metaphase, anaphase, telophase, cytokinesis You should be able to use a Punnett square to determine the genotype of the offspring when given the genotype or other information about the parents. Vocabulary genotype, allele, phenotype, traits, genes, chromosomes, dominant, recessive, Gregor Mendel, Reginald Punnett, pedigree