SCIENTIFIC METHOD

Read each slide.

Look carefully at each picture.

Answer each question.

All scientists follow rules when conducting an experiment.

These rules are called the

SCIENTIFIC METHOD.

Scientists follow

these rules so

other scientists

can perform

the same

experiments.

Scientists perform each experiment at least 3 times.

They want to

make sure that

each experiment

really works.

The first thing you need is a

PROBLEM.

Next you make a guess about what will happen during your

experiment.

This is your

Next you do the experiment to find out what happens.

1 2 3

Remember that you must do each experiment at least three

times.

Now you have the results of your experiments.

Results are called

DATA.

Data can be shown in many different ways.

This is a bar graph.

This is a pie graph.

This is a line graph.

Sometimes scientists put their data together into a report.

After looking at the results you decide on a

CONCLUSION.

When you do an experiment use your 5 senses to

make careful observations.

Remember to record your observations and data

into a:

graph or

a chart..or

a table

or your journal.

It is important to record your results for others to see.

You must use scientific words and measurement

when your write about

your results.

Scientists don’t say,

“It is cold.”

“It is cold,”

is a personal opinion.

You might say, “It is 32 degrees Fahrenheit.

Scientists say, “It is zero degrees Celsius.

A scientist

would never

say,

“The flower

is tall.”

A scientistwould say, “It is 30 centimetersfrom theground to the petals.”

Scientists measure

everything!

They measure the volume of liquids in liters.

They measure the mass of an object in grams.

They measure the length of an object in meters.

A meter can be broken down into

smaller units to measure smallerthings.

CENT means 100.There are 100 cents in 1 dollar.

There are 100 centimeters

in 1 meter.

You can buy soda in liter bottles.

The mass of an object is measured in grams.

This MARS Ice Cream bar weighs 50 grams or has a

mass of 50 grams.

This puppy had a weight of 500 grams or a mass of 500 grams

when he was born.

We ask, “How much does it weigh?”

A scientist asks, “What is the mass of the object?”

Meters, grams and liters are all ways to measure using the

METRIC system.

Scientists always use the

METRIC system.

QUIZ1.The rules all scientists follow when they perform an

experiment are called the _______________________

2. What is another word for HYPOTHESIS?___________

3. What are some types of graphs you can use to show your results or your data? _______________________

4. Scientists measure everything! What system do they use to measure? ______________________________

5. What does the word cent mean? _________________