What do scientists do?
How do scientists investigate?
How do scientists collect and interpret data?
How do scientists support their conclusions?
Review
100

What do scientific investigations traditionally begin with?

A testable question

100

What is an experiment?

The use of scientific methods to test your hypothesis.

100

What is data?

information from which a conclusion can be drawn or a prediction can be made.  (Facts)

100

What is one way a scientist may defend a conclusion?

By using observations

100

How many variables should be tested at one time?

One

200

What are some examples of reference materials?

Scientific Journals, reputable websites, books

200

What is a variable?

something that can change in a test

Independent variables-you can control

Dependent variables- changes when an independent variable changes.

200

What is the difference between precision and accuracy.

Precision is the ability to consistently repeat a measurement. 

Accuracy is the ability to make a measure that is as close to the actual value (target) as possible.

200

Define evidence.

a set of observations that make you believe that something in true.

200

What is something that scientists using the scientific method would NOT do?

form an opinion and let that drive their results

300

What is a hypothesis?

a statement of what you think will happen during an investigation. It is often written in the form of an if...then...because statement.
300

What is a control group?

A standard against which change is measured.

ex: Apples with no changes.  

300

What is an inference?

a conclusion based on observations.

300

Does all evidence support a scientist prediction?

No. During a scientific investigation, evidence may show results that are unexpected.  However, this does not mean the experiment was not useful.  Unexpected results can lead to new understanding.

300

For a scientific investigation to be valid is must be able to be ...

replicated

400

What is an observation?

something you find out about objects, events, or living thigs by using your senses.  

400
What are procedures?

Step by step instructions for completing a task.

400
What are some ways to organize data?

Tables, graphs

400

Explain the difference between an observation and an inference.

An observation is information you can see or measure.  

An inference is a conclusion based on observations.

400

A scientific conclusion is based on...

facts and observations

500
How do scientist draw conclusions?
They summarize what they have learned by analyzing their observations.
500

Why would a scientist use a model in an investigation?

The scientist might be studying something too large, expensive, or dangerous to study directly.  
500

Why is it important to organize data with consistency and precision? 

It is important to organize data so that people an use the information that has been collected to make inferences.  Organizing data also allows other scientists to more easily review and confirm an investigation's results.  

500

Why is it important that scientists' conclusions are based on evidence?

In order for a conclusion to be accepted by the scientific community, it must be based on facts.  

500

What should you be sure to do to stay safe when performing science activities?

Ask my teacher questions.

Pull hair back.

Wear safety goggles.

Never taste or smell any substance unless directed to do so by your teacher. 

Use chemicals carefully

Read the activity carefully before you start.

Be safe: handle sharp items and other equipment carefully.

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