Chapter 1.2 Richard
a scientific law describes an observed pattern in nature without attempting to explain it. The explanation of such a pattern is provided by a scientific theory.
How does a scientifc law differ from a scientifc theory?
A scientific law describes observations while a theory provides an explanation
How does a scientific law differ from a theory?
case to case
Scientific methods can vary from ________, depending on the question and how the researcher decides to look for an answer.
hypothesis
a proposed question to a answer
False
a scientific law attempts to explain an observed pattern in nature
theory
a well-tested explantation for a set of observations
to solve a problem or to better understand an observed event
identify the goal of any scientific method?
true
if the data from an expierment do not support your hypothesis, you can revise the hypothesis or propose a new one
variable
in an experiment, any factor that can change is called a ________
observation
information that you obtain through your senses
model
is a representation of an object or event. A street map is a ______ of a city
scientific theory
is a well-tested explanation for a set of observations or experimental results.
mantipulating, responding, controlled
name three types of variables in an expierment
make it easier to understand that are too diffcult to understand
why do scientists use scientific models?
to dont carry chemicals to other places
why should you wash your hands after every experiment?
observations, experiments
After repeated _________ or ___________, scientists may arrive at a scientific law
Yes, it always starts with an observation.
Does every scientific method begin with an observation? Explain
theory
Once a hypothesis has been supported in repeated experiments, scientists can begin to develop a _____.
manipulated variable, responding variable, controlled variable
What are three types of variables in a controlled experiment
a proposed question to a answer
What is a hypothesis?
the goal of any scientific method is to solve a problem or to better understand an observed event.
What is the goal of a scientific method?
to make complex concepts easier to understand
What is the main purpose of a scientific model?
study safety rules, real all procedural steps, understand the procedure
What safety precautions to follow whenever you work in a science laboratory?
Change the model, replace the model
What scientists do if data show that a model is wrong?
Scientific models make it easier to understand things that might be too difficult to observe directly
Why are scientific models useful?
answer
You can use a scientific method to search for the ______ to a question.
controlled experiment
a ____ is a experiment in which only one variable, the manipulated variable, is deliberately changed at a time.
scientific law
a _____ is a statement that summarizes a pattern found in nature.
theory
all scientists may accept a given scientific law, but different scientists may have different _____ to explain it
scientific method
an organized plan for gathering, organizing, and communicating information is called a __________
manipulated variable
causes a change
responding variable
changes in response to the manipulated variable
conclusion
describes how facts apply to a hypothesis
a theory is a well tested explantation and a hypothesis is a testable question for observing
how does a scientific theory differ from a hypothesis
