Test Review Science
Accuracy
A measurement that is an assessment of the measurement error.
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.
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
Physics
Deals with how matter and energy interact.
Chemistry
The study of the composition of substances and how they act in the presence of other substances.
Responsible Variable
The variable that changes in response to a manipulated variable.
What are the steps to the scientific method, and be able to define and apply them?
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
Hypothesis
A proposed answer to a question in an if, then statement.
What is a scientific model, and why do scientists use them?
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,
Scientific Law
A statement that summarizes a pattern found in nature.
Manipulated Variable
A variable that causes change in another variable (responsible)
Scientific Theory
A well-tested explanation for a set of observations or experimental results (THEORIES ARE NEVER PROVEN)
What is the most important laboratory safety rule?
Always follow teacher instructions and procedures exactly.
Precision
An assessment of the exactness of a measurement. For a measurement to be precise, there must be more than one measurement.
Controllable Experiment
An experiment in which only one variable is changed.
Scientific Method
An organized plan for gathering, organizing, and communicating information.
Be able to make conversions between metric prefixes.
Kilo-, Hecto-, Deka-, Base unit (m, L, g), deci-, centi-, and milli-
Know the 2 types of variable and be able to explain what a controlled experiment is.
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?
Mass is kilograms. Time is seconds. Length is meters and temperature is Kelvin.
Science
People creating workable explanations or descriptions for the things and processes that we see in the world around us.
Be able to explain the difference between precision and accuracy
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 explain the difference between a scientific law and scientific theory.
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 write numbers in scientific notation (or go from scientific notation to standard form), and explain why scientists use scientific notation.
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.
