Chapter 1.2 Richard

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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


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