Science: Chapter 1: The World of Physical Science: Section 2: Scientific Methods
The results from experimental groups with results from a control group.
A controlled experiment compares _______________________?
Testable.
A good hypothesis should be ____.
If-then.
A good way to make predictions about a hypothesis is by stating it in an ____-____ statement.
The standard, group where you compare your results with the experimental group.
Control Group
Pieces of information acquired through observation and experimentation.
Data
Group where all the factors are the same except for one, which is called the variable.
Experimental group
Line graph
Graph that demonstrates changes (over time), compares two or more sets of numerical data, continuous. Example: time vs. temp.
Pie Graph
Graph that shows how each group of data relates to the whole (all data), compares one part to the whole (percentage/fraction.)
A reasonable answer to your question.
Testing a hypothesis helps you determine if the hypothesis is ________________.
Organizing it into tables and graphs.
How can you organize your data in order to make information easier to use?
By doing an experiment. They built a penguin boat, and tested it out.
How did Czarnowski and Triantaflyouu decide to test their hypothesis?
Repeat the tests, then change your hypothesis if necessary.
If your test show that your hypothesis is way off the mark, you will want to__________.
No, because some things are not always accessible, such as stars.
Is a controlled experiment always possible? EXPLAIN YOUR ANSWER
Factor that changes the experiment; the difference between the two groups. The results of the experiment will show the effect the variable has.
Variable
Observations made with tools.
What are measurements?
Any use of the senses to gather information.
What are observations?
Write scientific report, make a presentation, or create a website.
What are some ways to communicate results of a scientific investigation?
Focus the purpose of the investigation.
What does asking questions help scientists do?
An explanation that is based on observation.
What is a hypothesis?
Question, hypothesis, test hypothesis (experiment), analyze data, conclusion, communicate results.
What is the correct order of the steps to the scientific method?
There is no way to show whether the hypothesis is right or wrong.
What is the problem with a hypothesis that can't be tested. EXPLAIN.
To test a hypothesis.
What is the purpose of a controlled experiment?
Scientific methods.
What is the series of steps scientists use to answer questions and solve problems?
bar graph
What kind of graph can be used to make a a comparison?
You must analyze the data to see if your results support your hypothesis
What must you do after you run an experiment and collect data?
Draw a conclusion,
What must you do at the end of an experiment?
It allows other scientists to conduct additional research about the project/investigation.
Why is it important to communicate results of a scientific investigation?
bar graph
graph that demonstrates comparisions over long period of time (not continuous), compares heights, lengths, weights.