Science Quiz Questions and Answers 2024

What is the most important laboratory safety rule? - correct answer Always follow teacher instructions and procedures exactly. What are the steps to the scientific method, and be able to define and apply them? - correct answer 1. State the question 2 collect information 3 form a hypothesis 4 test the hypothesis 5 observe 6 record and study the data 7 draw a conclusion What is a scientific model, and why do scientists use them? - correct answer A scientific model makes it easier to understand things that might be too difficult to observe directly. A model is a representation of an object or event, in this case, a scientific object or event, Know the 2 types of variable and be able to explain what a controlled experiment is. - correct answer Manipulated variable is a variable that causes change in the responsible variable. Responsible variable is a variable is the variable that changes in response to the manipulated variable. A controlled experiment is an experiment in which only one variable is deliberately changed at one time, What is the SI base unit for mass, time, length, and temperature? - correct answer Mass is kilograms. Time is seconds. Length is meters and temperature is Kelvin. Be able to explain the difference between a scientific law and scientific theory. - correct answer Scientific law is a statement that summarizes a pattern found in nature while scientific theory is a well-tested explanation for a set of observations or experimental results. (THEORIES ARE NEVER PROVEN) Be able to explain the difference between precision and accuracy - correct answer Precision is an assessment of the exactness of a measurement. There must be more than one measurement for a measurement to be precise. Accuracy of a measurement is an assessment of the measurement error. Be able to write numbers in scientific notation (or go from scientific notation to standard form), and explain why scientists use scientific notation. - correct answer Standard 30000 Scientific notation 3.0E4 Scientists use scientific notation because it makes a very large number, or a very small number, easier to work with. Be able to make temperature conversions from Celsius and Kelvin temperature scales. Know the temperature water boils and freezes at in Celsius and Fahrenheit and Kelvin. - correct answer Celsius boils at 100 degrees C and freezes at 0 degrees C Kelvin boils at 373 degrees K and freezes at 273 degrees K Fahrenheit boils at 212 degrees F and freezes at 32 degrees F K = C+273 C = K-273 Be able to make conversions between metric prefixes. - correct answer Kilo-, Hecto-, Deka-, Base unit (m, L, g), deci-, centi-, and milli- Science - correct answer People creating workable explanations or descriptions for the things and processes that we see in the world around us. Physics - correct answer Deals with how matter and energy interact. Chemistry - correct answer The study of the composition of substances and how they act in the presence of other substances. Manipulated Variable - correct answer A variable that causes change in another variable (responsible) Responsible Variable - correct answer The variable that changes in response to a manipulated variable. Controllable Experiment - correct answer An experiment in which only one variable is changed. Precision - correct answer An assessment of the exactness of a measurement. For a measurement to be precise, there must be more than one measurement. Accuracy - correct answer A measurement that is an assessment of the measurement error. Scientific Method - correct answer An organized plan for gathering, organizing, and communicating information. Hypothesis - correct answer A proposed answer to a question in an if, then statement. Scientific Theory - correct answer A well-tested explanation for a set of observations or experimental results (THEORIES ARE NEVER PROVEN) Scientific Law - correct answer A statement that summarizes a pattern found in nature.