Study Guide GED 2024: Science Practice Exam Questions And Answers A+ Score.

Hypothesis - correct answer Possible answer to a scientific question Variables - correct answer Parts to be changed. Observational study - correct answer Used to answer a research question purely on what the researcher observes Ethics - correct answer A system of moral principles. Evidence - correct answer Proof something is true. Evalute - correct answer Finding more than one source to support the hypothesis. Deduction - correct answer Conclusion made by supported evidence. Acronym: Aces - correct answer Ask, Collect, Evaluate, Summation Prediction - correct answer Using evidence to make an educated guess about the future. 3 P's acronym: - correct answer Present, past, predict. Present - correct answer To make a deduction. Past - correct answer Imagine the past. Predict - correct answer Predict the future. Controlled experiment - correct answer An experiment in which only one variable is manipulated at a time. Observational experiment - correct answer An experiment in which the observer does not intervene in any way on the test subject. What does a data set summarize? - correct answer Compares the numbers. How do you support a conclusion? - correct answer Compare the data. Should the conclusion evaluate the purpose? - correct answer Yes. Data - correct answer Information gathered for investigation. Quantitative - correct answer Data that is in numbers (example: minutes and ratios) Qualitative - correct answer A descriptive form of data (word or phrase) Vetting - correct answer Determining whether data is relevant to a topic. IDEA Acronym - correct answer Identify question, Determine methods, Establish results, Access conclusion How do you assess a conclusion? - correct answer Compare the results, does the claim support the data? Truncated - correct answer Cut off; shortened Infer - correct answer Predict data, beyond a scope in an experiment. Relationship: - correct answer Having two or more sets of data that work together Mathematical relationship - correct answer D= r • t Relation set - correct answer When a set is based on a variable, it has a nearly unlimited list of possible values. Non-mathematical relationship: - correct answer sort objects into sets, each set has its own data D= r * t - correct answer Distance = rate times time Formula for Acceleration - correct answer a = Δv/Δt Formula for Acceleration Definition: - correct answer Acceleration equals change in velocity divided by change in time. Formula for weight: - correct answer W=mg (g=gravity, m= mass) Weight - correct answer A measure of the force of gravity on an object. Density - correct answer mass/volume, divided by. Calculating power: - correct answer p = w/t; power = work/time Kinetic energy - correct answer KE=1/2mv^2 Farenheit to Celsius: - correct answer C x 9/5 + 32 = F Unexpected variable: - correct answer a variable that you didn't predict Ordinary variable - correct answer Regular prediction Independent Variable - correct answer The experimental factor that is manipulated; the variable whose effect is being studied. Dependent variable - correct answer The measurable effect, outcome, or response in which the research is interested. Control group - correct answer the group that does not receive the experimental treatment. Experimental group - correct answer the group in an experiment that receives the variable being tested Placebo - correct answer procedure with no expected result Double-blind trial: - correct answer Neither the doctors or patient know if they are receiving a placebo or the actual drug A testable answer to a scientific question: - correct answer Two variables, one causes change.. the other measures change. Precision - correct answer How close the darts are to each other Accuracy - correct answer How close a measurement is to the true value Systemic error - correct answer Affects accuracy of a measurement. Produces wrong, but consistent results. Random error - correct answer Produces inconsistent results, even if measured the same. How do you design and modify an experiment? - correct answer Hypothesis, variables, collect data, establish and compare groups, draw a conclusion. Modifying - correct answer changing Scientific method - correct answer consists of observation, measurement, and experiment to form a hypothesis Unit of measure - correct answer quantity you use to measure, numbers Critical study - correct answer serious, objective study (looks for faults of a work of literature) Observational study - correct answer Used to answer a research question based purely on what the researcher observes Bias - correct answer prejudice Unknown variable - correct answer anything that may influence the results of an experiment, other than the independent variable Conclusion - correct answer A summary based on evidence or facts Tables - correct answer Organize and compare data Diagram - correct answer To draw a detailed picture of Line graph shows - correct answer trends over a period of time Bar graphs are used for - correct answer categorical data Scatter graph - correct answer Graphs which show how two sets of data are related to each ot