SCIENCE

An organized way of studying things and finding answers to

questions.

TYPES OF SCIENCE

Each type of science is given a name to describe what is

being studied.

TYPES OF SCIENCE

Life science Physical science Earth science Space science

Studies plants, animals, and other living things

Studies energy, matter, and chemistry

Studies the processes that shape the Earth

The study of all things in the universe

TYPES OF SCIENCE

EXPERIMENTAL DESIGN

Organized method used to solve problems and answer

questions

STATE THE PROBLEM

Ask a question What are you

trying to solve?

Which color Life Saver dissolves the fastest?

GATHER INFORMATION

Think about your own experiences with this topic

Do research Who else studied

this and what did they find out

It has been my experience that I eat the green Life Savers faster than any other color

FORM A HYPOTHESIS

Pose a testable explanation.

What do you think is going to happen?

Make an educated guess

I think the green Life Saver will dissolve faster than any other color.

I also think that purple will last the longest.

DESIGN AND PERFORM AN EXPERIMENT

A set of steps to follow to test the hypothesis

Observe and record all information

Be sure to identify the controls, constants, and variables

1. give each test subject a different color Life Saver

2. each test subject puts the Life Saver in their mouths at the same time

3. record the time it takes for the candy to dissolve

CONTROLS AND CONSTANTS

CONTROLS The standard to

which the outcome of a test is compared

What you measure against

CONSTANTS The things that

remain the same

VARIABLES

Something in an experiment that is changed or measured

The color of Life Savers was changed

The time to dissolve was measured

VARIABLES

INDEPENDENT VARIABLE

What is changed or different

What starts the experiment

Can only be 1

DEPENDENT VARIABLE

What is measured The result

EXTRANEOUS VARIABLES

Unexpected or unpredictable events

Improperly controlled experiment EX: the Life Saver lab

ANALYZE THE DATA

Determine what the data means

Make graphs and data tables

DRAW A CONCLUSION

A logical answer to a question based on data and observations

My data does not support my hypothesis, I said the green Life Saver would dissolve the fastest but the white one did.

The purple Life Saver did last the longest.

If the hypothesis is supported

The experiment needs to be repeated several more times

The results need to be shared with the scientific community

If the hypothesis is not supported

The results need to be shared with the scientific community

The hypothesis needs to be revised and tested again

REVIEW TIME

What is Science?

An organized way of studying things and finding answers to questions

What are the 4 basic types of Science?

Life Physical Earth Space

What is the first step in designing an experiment?

To state the problem or ask a question

What is a hypothesis?

A testable explanation A prediction

What is a control?

What you compare against

What are constants?

Things that stay the same

How many variables can be tested at one time?

1

What is an independent variable?

What is changed or tested

What is a dependent variable?

The result

What is measured

What is the easiest way to organize data?

Graphs and charts

If your hypothesis is supported what do you do next?

Repeat the experiment Share the results

If your hypothesis is not supported what should you do?

Share your results Revise and retest