Science Fair Lab Write UP.pdf

7/23/2019 Science Fair Lab Write UP.pdf

http://slidepdf.com/reader/full/science-fair-lab-write-uppdf 1/14

I.

Title: Taste the smell.

II.

Purpose: To determine whether smell affects food taste.

III. Question: Does smell affect the taste of food?

IV.

Hypothesis: Food should taste different if smelled before eaten.

V.

Materials:

a.

Trial 1: plates, forks, napkins, spoons, plastic cups, blue cheese, onion bagels, oranges,

peach tea, chocolate cake, cinnamon buns.

b.

Trial 2: plates, forks, napkins, spoons, plastic and paper cups, toothpick, onion bagels,

pesto, cream cheese, cinnamon coffee cake, spam, coffee, pickle.

VI.

Variables:

a.

Manipulated Variable: food types (different types of food).

b.

Responding Variable: taste (bland, sweet, sour, spicy, bitter), and smell of food.

c.

Controlled Variable: leadership students, procedure.

VII.

Experimental Procedures:

Trial 1:

Instruction:

1.

Choose a food station.

2.

Sample the food without smelling it by covering your nose before you eat.

3. Record the taste in the chart by marking an “x” on appropriate taste box.

4.

Take a smell of the same food item.

5.

Record the smell in the smell column using adjectives to describe the smell.

6.

Now take the taste of the food.

7.

Record the taste in the column “with smell”.

8.

Move with your partner to another station.

9.

Repeat step 1-8 until all food station has been sampled.



Trial 2:

Instruction:

10.

Rinse your mouth with water from the sink.

11.

Choose a food station.

12.

Hold your nose closed with one hand and then taste the food.13.

Continue to chew and swallow with your hand on your nose, keeping it closed.

14.

Record the taste in the chart, marking with an “x” on the taste on the column

“without smell”.

a. Multiple “x” can be mark, with exception of bland. Bland food

has no taste, and therefore cannot be mark with any other

taste.

15.

After recording, bring the food close to nose and smell. Inhale deeply to get an

accurate smell.

16.

Recording the smell into the empty box below the “with smell” column.

17.

After recording, you can taste the food. Make sure to chew slowly to get the fullflavor.

18. Record the taste in the chart, marking with an “x” on the taste on the column

“with smell” .

19.

Move with your partner to another station.

20.

Repeat step 1-10 until all food station has been sampled.



VIII.

Observations/Data:

Trial 1:

Without With Without With Without With Without With Without With Without W

Taste Bland x x x

Sweet x x x x x

Sour x x

Spicy

Bitter x

Smell


Taste Bland x x

Sweet x x x

Sour x x x x

Spicy

Bitter x x

Smell


Taste Bland

ice

cream

cake

after

taste,

sharp

crispy x fruity blossom

looms cre

Sweet x juicy x tropical x x m

Sour x sl

SpicyBitter x x

Smell

Chocolate Cake Cinnamon B

ice

cream

cake

bitter bitter

and sour fruity milky sl

Blue Cheese Onion Bagel Oranges Tea

Zack McAlister

smells

like

pretty

bad

smells

sweet

smells

fruity

(sweet)

smells

very

sweet

sm

v

sw

Maryam NabinahBlue Cheese Onion Bagel Oranges Tea Chocolate Cake Cinnamon B

strong,

smells

bad

Blue Cheese Tea

juicy

Lindsey

Food Tasting Test 1

lemony

Chocolate Cake

bitter

like

chocolat

e

Onion Bagel Oranges Cinnamon B

plain

like

nothing

go

ta




Taste Bland

Sweet bitter bland sweet sweet bitter spicy the

cheese

spi cy bl and spi cy sw

Sour sweet

Spicy

Bitter

Smell


Taste Bland x x x x x x

Sweet x x x x

Sour

Spicy

Bitter x

Smell


Taste Bland x x

Sweet x x x x x x x

Sour x x x

Spicy

Bitter x x x

Smell

Allyson Hom

Ethan Van

sweet swstinky salty nothing sweet

Chocolate Cake Cinnamon BOnion BagelBlue Cheese Oranges Tea

Jonah Park

sweet cinn

ny, stinky salty sweet

sweet,

fruity

Chocolate Cake Cinnamon BBlue Cheese Onion Bagel Oranges Tea

like

chocolat

e, sweet

sw

and

cinn

bitter

and

spicy

bland,

like

onion

sweet,

juicy peachy




Trial 2:


Taste Bland x x sweet sweet

Sweet x x x x x x x

Sour x x sour

Spicy

Bitter x x

Smell

smells

like

chocolat

e sweet

frstrong

smells

like

bread

blend

doesn't

smell

like

anythin

g

sweet

and

sugary


Daniela Kerr

Without With Without With Without With Without With Without With Without With Without W

Taste Bland X X

Sweet X X X x x

Sour X

Spicy X X

Bitter X X X

Smell


Taste Bland X X X

Sweet X

Sour X X X X X X X

Spicy X

Bitter X X

Smell

Food Tasting Test 2

Lindsey

Maryam Nabinah

Smells

really

bad!

smells

like a

raw

meat.

Smells

very

strong

Sm

s

Smelled

like a

very

savary

food

smelled

chessy

smells

good

(sweet

and

pleasant

)

Smelled

good

(very

sweet

and

cinnamo

ny)

Spam Coffee Pickle

strong

Onion Bagel Pesto Cream cheese Cinnamon Coffee

Cream cheeseOnion Bagel

Salty

Salty

and

pungent

SpamPesto Cinnamon Coffee

Sweet

pleasant

Pickle

creamy

Coffee

strong

spicyb




Taste Bland x x x x

Sweet x x

Sour x

Spicy

Bitter x x x x x

Smell salty salty


Taste Bland X X X

Sweet X X X X

Sour X X X

Spicy X

Bitter X X X

Smell


Taste Bland x X x x x x X X X

Sweet x x x

Sour X

Spicy

Bitter X

Smell


Taste Bland x x x x x x

Sweet x x x

Sour x x

Spicy

Bitter x x x

Smell

Zack McAlister

Jonah Park

Allyson Hom

Ethan Van

nothing

Strong

and

Bitter

SBland bitter

Sweet

and

Creamy

Smells

Bland

Spam Coffee PickleOnion Bage l Pesto Cream cheese Cinnamon Coffee

salty

bitter,

refreshi

ng,

stong

s

s

cr

salty salty,

strong

pleasant

, sweet

sweet,

cinnamo

n,

pleasant


smells

sweet

and

salty

It smells

bitter

Sw

es

br

It smells

like

onions

It smells

like

vegetab

le

Like

rotten

milk

Sweet

and like

cinnamo

n


slimy

p

sm

b

ta

b

smells

salty,

tastes

salty

smells

sour and

bitter,

tastes

bland

smells

bitter,

tastes

bitter

and

creamy

smells

bland,

tastes

bland

smells

sugary

and

tastes

sweet

and

gooey





Taste Bland X x X x X

Sweet X x x x X

Sour X

Spicy

Bitter x X

Smell

smokey s

Daniela Kerr

spice strong bland pleasant

Spam Coffee PickleOnion Bagel Pesto Cream cheese Cinnamon Coffee



IX.

Data Analysis:

Trial 1:

Table 1

Figure 1

Data from trial 1 is summarized in table 1, showing whether there is an indicated change

in taste when a food is eaten without smell first and consumed once again after smelling it.

Figure 1 shows that, out of 36 collectable data (data that was filled out appropriately with

given instruction), approximately 67% of food eaten indicates a change in taste. This shows

a majority of the food tasted across various students differently when students smell the

food in comparison to when students did not smell the food.

Trial 2:

Change No Change

Lindsey 3 3

Maryam 4 2

Zack 0 0

Ethan 6 0

Allyson 4 2

Jonah 3 3

Daniela 4 2

Total 24 12

Taste Trail 1

Change67%

No Change

33%

Taste Trial 1



Table 2

Figure 2

Data from trial 2 is summarized in table 2, showing whether there is an indicated change

in taste when a food is eaten without smell first and consumed once again after smelling it.

Due to a clearer instruction and familiarity with the process, the trial yields a total of 49

collectable data. Figure 2 shows that, out of 49 collectable data, approximately 47% of food

eaten indicate a change in taste. There is a 20% difference in the data indicating a change intaste in comparison to data in table 1. However, because of the smaller set of data,

approximately only 73% collectable data of that in table 2, there expected to be some

margin of error.

Change No Change

Lindsey 5 2

Maryam 3 4Zack 1 6

Ethan 3 4

Allyson 5 2

Jonah 2 5

Daniela 4 3

Total 23 26

Taste Trail 2

Change

47%No Change

53%

Taste Trial 2



Another look into the data from the perspective of each student reveals where the

outlier that cause the margin of error. Below is the comparison between the two trials of

how many food types each student indicates a change in taste:

Graph 1

Graph 2

One can observe that Zack has no data collected for trial 1 due to data not being

properly recorded in Graph 1. Therefore, his data makes a big impact in trial 2. Ethan, on the

other hand, seems to have a sharp spike in number regarding the food taste being different

when not smelling before eating. These two may account for the huge margin of error.

0

1

2

3

4

5

6

7

Lindsey Maryam Zack Ethan Allyson Jonah Daniela

N

u m b e r o f f o o d t y p e e a t e n

Students

Taste Trial 1

Change

No Change

0

1

2

3

4

5

6

7

Lindsey Maryam Zack Ethan Allyson Jonah Daniela

N u m b e r o f f o o d t y p e e a t e

n

Students

Taste Trial 2

Change

No Change



If Zack were to be taken out of the data, the difference in trial 2 and 1 of food taste

changing is reduced to 15% (67%-52%), as seen below in figure 3.

Figure 3

There difference is drastically reduced to a mere 6% (60%-54%) margin of error if both

Ethan and Zack were to be taken out of the data entirely. The 2 figures below show this reduce

in difference:

Figure 3

Change

52%

No Change

48%

Trial 2 without Zack

Change

60%

No Change

40%

Taste Trial 1 without Zack and Ethan



Figure 4

X. Conclusion: With the help of the leadership students, the experiment proves that food do

taste differently if smelled before eaten. However, due to the lack of clarity on the

instruction during the first trial, the experiment results in a large margin of error in the

percentage of food taste changing. Nevertheless, if two outliers, Zack and Ethan, were to be

taken out, the experiment proves to be that the data shows a consistent percentage in food

being taste differently when smelled before eating. Further improvement can be done by

increasing a larger number of students, more food types, and perhaps a focus in one specific

area of taste or smell to see which one causes the change the most.

Change

54%

No Change

46%

Taste Trial 2 without Zack and Ethan

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