MTTC Integrated Science Complete Questions and Answers(GRADED A)

MTTC Integrated Science Complete Qmake corrections - drawing a single line through it Parts of a lab report - ANSWER 1. title 2. abstract - contain the hypothesis - include a control and one variable 3. introduction 4. methods 5. results 6. conclusion / summation Volumetric flask - ANSWER - used to accurately prepare a specific volume and concentration of solution Erlenmeyer flasks - ANSWER used for mixing, transporting, and reacting NOT appropriate for measuring Meniscus - ANSWER where the liquid measurement is read Graduated cylinders - ANSWER - precise measurements - more accurate than Erlenmeyer flasks or beakers Burette - ANSWER - glassware to accurately dispense liquid - has a stopcock and a tip Typical vs. Compound microscope - ANSWER - typical = 1 lens - compound = 3 lenses Chromatography - ANSWER set of laboratory techniques used to separate or analyze mixtures Diluting Acids - ANSWER - always add the concentrated acid solution to water Centrifuge - ANSWER - used to separate the components of a heterogeneous mixture by spinning it ex. separate blood cells and plasma - the heavier cells settle on the bottom of the test tube and the lighter plasma stays on top ex. salad spinner to dry lettuce Calorimetry - ANSWER used to determine the heat released or absorbed in a chemical reaction Titration - ANSWER helps determine the precise endpoint of a reaction Metric system - ANSWER - meter: length - liter = volume - gram = mass Graphs of independent vs dependent variable - ANSWER *independent variable = what is being manipulated is on the x-axis *dependent variable = the ones that may change as the independent variable changes is on the y-axis 5 skills developed from the National Science Education Standards - ANSWER 1. understand scientific concepts 2. appreciate "how we know" what we know in science 3. understand the nature of science 4. Develop the skills necessary to become independent inquirers about the natural world 5. develop the skills necessary to use the skills, abilities, and attitudes associated with science Scientific fact - ANSWER an objective and verifiable observation Scientific theory - ANSWER greater body of accepted knowledge, principles, or relationships that might explain why something happens Hypothesis - ANSWER - an educated guess that is not yet proven Law - ANSWER an explanation of events that always leads to the same outcome. Scientific Method - ANSWER 1. identify a problem or posing a question 2. formulating a hypothesis or an educated guess 3. conducting experiments or tests that will provide a basis to solve the problem or answer the question 4. observing the results of the test 5. drawing conclusions 6 abilities of K - 4 Students - ANSWER 1. able to ask questions about objects, organisms, and events in the environment 2. devise a simple investigation to answer a question 3. use tools such as magnifying glasses, rulers, and balances to gather data and make observations 4. use the gathered data and observations to provide an explanation 5. talk about, draw pictures, or use another method to communicate the results of an investigation and what they learned 6. understand the scientific inquiry 5 abilities of 5 - 8 Students - ANSWER 1. reformulate and clarify questions until they can be answered through scientific investigation 2. create and carry out a scientific investigation, interpret the data to provide explanations, and use further data to revise explanations 3. identify the tools necessary to gather and analyze data. Able to use computer hardware and software to store, organize and gather data 4. provide descriptors and explanations, create models, and make predictions based on the body of knowledge they possess 5. explain cause and effect relationships using explanations and data from experiments Greenhouse Gases - ANSWER - they are = ozone, carbon dioxide, water vapor, and methane - they trap infrared radiation that is reflected toward the atmosphere - wi uestions and Answers(GRADED A)