The goal of science
Is to investigate and understang the natural world, to explain in the natural world, and to use those explanations to make useful predictions.
Science
deals only with the natural world
explanation, tested
Scientists propose_________ that can be __________ by examining evidence.
How is science done?
1. observation
2. Data
3. Hypothesis
Observation
Science begins wit an ________. This is the process of gathering information about events, or processs in a careful , orderly way.
__________ is the process of gathering information about events or processes in a careful, orderly way.
Observation
Data
_______ is the information gathered from making observations
What are there two types of data?
1. quantitative
2. qualitative
Quantitative data
are numbers and are obtained by counting or measuring
Qualitative
descriptions and involved characteristic that cannot be
Hypotheis
Is a scientific explanation for a set of observations.
__________
must be stated in a way that makes it "testable". The ________ is just a possible answer to a question, and it must be throughly tested.
Scientific method
a series of steps used by scientific
to solve a problem or answer a questons.
....The steps to the scientific methods include:
1. design a controlled experiment
2. record and analyze results
3. draw conclusions
Hypothesis
a possible explanation to the question or problems
It is simply a prediction and has not yet been ________
proven or disproven
What must be tested? A statement is considered "tested:
Hypothesis
Variables
The factors in an experiment that can be called________________
What is an exampl of a variable?
changing the temperature, the amount of light present, time , concentrtion of solution used.
Control experiments
Works with one variable at a time. .
In a controlled experiment only__________is changed at a time.
one variable
An experiment is based on the comparison between a _______ with an _________
conrol group, experiment group
control group
serves as the comparison and one variable that is being tested is removed
experimental group
this group shows the effect of the variable that is being tested.