scientific method by taif

8/13/2019 Scientific Method by Taif

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The

Scientific

Method


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The Scientific

MethodQuestion/Problem

Hypothesis

Materials

MethodObservations

Conclusion

Evaluation

VariablesBias

Theory

Law


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Inference/Hypothesis

Hypothesis a testable

explanation, kind of like educated

guess BRAIN POP


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Materials

What you need to run the

experiment, make a list make it

specific SCIENCEBUDDIES.ORG


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Method/Experiment

Experiment your problem BRAIN

POP Its important that your

experiment is a fair test. You make afair test by making sure that you

change only one thing at a time

while keeping all other conditions

the same SCIENCEBUDDIES.ORG


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Observations

A prediction that has evidence

BRAIN POP


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Conclusion

Conclude the problem and think if

your hypothesis was true or not if your

hypothesis is incorrect then it has to

be rethought BRAIN POP


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Evaluation

Something you want to do better in

the experiment the next time you do

it.


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Variables

The part of the experiment that

changes BRAIN POP A variable

is any factor, trait, or conditionthat changes

SCIENCEBUDDIES.ORG


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Bias

Something that will

make it unfair


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Theory

A theory is an

explanatory statement

that has been confirmed

that its true BRAIN POP


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Law

Repeated

experiment.


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Experiment 2: Animal

camouflage

Problem

How does camouflage affect vision?

Hypothesis

Materials

People would choose contrasting colour

over the matching colour.

Scissors,1 a4 brown

paper, 2 a4 green paper,

and group of people.


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Method

Conclusion

Evaluation

Cut 1brown paper and 1 green paper into 1 inch

squares. Mix the squares on the green paper. Tell

the group of people that you are testing how fasttheir reflex is. Give each person five seconds to

take the squares as much as they can in that

time. Record how many green squares and how

many brown squares they took. Do the other

people using the same method.

Our hypothesis was correct. People took morebrown squares. Here is a graph:

We should try this again

and make a theory


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Experiment 3: eggs

experiment

Problem

Hypothesis

Materials

How can I tell the difference

between a cooked egg and raw egg?

Cooked egg will spin very well raw will be slower.

2 raw eggs and 1 cooked egg.


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Observation

Conclusion

Evaluation

Method

When we shook the eggs 2 of them seemed like

they had liquid inside. When we put them inwater it didn't work and there was no difference.

Spin each egg on a hard surface see what

happens and record it.

When we spun the eggs one of them spun very

fast. We think that the egg that moved fast was

the cooked egg. Both the others spun very slowly

We should add more eggs


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Experiment 4:Surface

tension

Problem

Hypothesis

Materiels

If you bring different sizes of paper clip and let

it float will there be a difference between them?

The bigger paper clip will float better because

it will have more surface tension

Different size of paper clips, and a bowl of

water.


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Method

Conclusion

Observation

Evaluation

First bring several small paper clips and gently try

to make them float. Then get the big paper clipsand try to float them. Observe and record how

many paper clips floated from the small ones and

big ones.

The big paper clips did not float maybe

because it is heavier the small ones did.

My hypothesis was incorrect because the big

paper clips did not float. I think they didn't floatbecause they were heavier.

We should use a bigger bowl of water.


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Experiment 5:Water balloon

toss

Problem/question

Hypothesis

Materials

Method

Will a balloon break in longer distance or the

shorter?

The longer the distance between us the faster

the balloon to break

1.Several filled water balloons

2.A friend who doesn't mind getting wet

3. Old clothes

Pick up one balloon and stand facing your

friend. Toss the balloon. After a successful

catch, both of you take a step backward.After

your friend tosses the balloon back to you, each

of you takes another step backward. Continue

this process until the balloon breaks.See how far apart you can get without breaking

the balloon. Try this again but with bigger

balloons.

Excerpt From: Robinson, Tom. TheEverything Kids' Science ExperimentsBook. F+W Publications, Inc., 2001.iBooks.


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Observation

Conclusion

Theory

We started by 3 meters away for each other then

tried throwing the ball 4 times around but it didn't

pop but it only popped when it hit something hard

which doesn't count. When we were 8 meters

apart the balloon popped much faster and easier.

We noticed that The balloon seems to pop

whenever we were further apart. The balloon

seems to pop whenever it's in mid air. We noticed

that the texture of the balloons affected when it

popped. We realised that each balloon has adifferent texture. Each colour has a different way

of popping. The higher we throw, the easier it

breaks. On our last balloon it slid onto the ground

and because of friction the balloon popped.

When we were 8 meters apart the

balloon seemed to pop the fastest and

the easiest and our hypothesis was

proven right.

The balloon kept on

popping when we were

further apart for eachother and the higher we

threw it, it would pop in

mid-air.


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Experiment 6:Cow's

methane

Problem/questions

Hypothesis

Will adding garlic to cows feed reduce the

amount of methane produced?

Adding garlic won't work, because it causes

more stink,like bad breath.


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Materials

Method

Garlic

20 cows

Cows foodA machine that can test air

An empty room

1. Put cow in empty room for 2 weeks,Add garlic

to cows food.

2. Let the cow eat it.

3. Wait till finish, take a sample of air, see how

much methane in that

4. Try this again with the other 9 cows5. Try it again but by not adding garlic to the left

10 cows, test air 3 times a day.

6. See the difference, record and share


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Experiment 7:

washing detergent

Problem/

question

Materials

Which laundry detergent works best?

25 pieces of fabric (SAME COLOUR)Barbecue sauce

Grass dirt

Ketchup

Orange juice

5 different kinds of laundry detergent


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Method

1. Take one fabric put barbecue sauce on it

2. Do that to other 4 fabrics using, grass dirt,

ketchup, orange juice, and coffee3. Take the fabrics and hand wash them using

ONE laundry detergent for all 5 fabrics that have

the stuff on it

5. Rate the results from 1-4 (1 is BAD 4 is

EXCELLENT)

6. Do this again BUT with the other laundrydetergents

7. Tally the score about each result, See which

detergent is the best from clearing off the stains


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