Sponge: Set up Cornell Notes on pg. 51

Topic:

12. 3 Smell- “The Nose Knows” Mini Lab

Essential Question:1. What is the major difference between taste and flavor?

2.1 Atoms, Ions, and Molecules

12. 3 Smell- “The Nose Knows” Mini Lab

The Nose Knows (Mini Lab)

How are smell and taste related?

• 75-80% of taste is actually smell• The perception of a food’s taste comes from a complex combination of sensory inputs from chemical receptors on the tongue and at the top of the nasal passages

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TASTE vs. FLAVOR

Hypothesize: In your own words, what is the difference between taste and flavor?

Pg. 50

Taste vs. Flavor

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Pg. 51

Taste vs. Flavor• Taste- one of the four (five?) perceptions that

come from the tongue’s taste receptors• Sweet• Sour• Salty• Bitter• *Umami

• Flavor- a particular kind of taste/smell experience

• Cherry• Orange• Lime• Lemon• Strawberry• Honey

The Nose Knows (7m3s)

• Please take 10-15 bullets

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The Nose Knows Mini Lab

Materials•4 Dum Dums

•A clock or phone timer

•Paper for recording observations

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1. Partner #1: Close your eyes and pinch your nose shut with your fingers.

2. Partner #2: Select a candy, but do not tell the subject the flavor.

3. Partner #1: Open your eyes--but keep your nose pinched shut!

4. Partner #2: Begin a 60-second countdown. At the same time, ask the volunteer to describe the sensations he or she is experiencing. Record.

5. Partner #2: Try and identify the flavor of the candy.

6. After 60 seconds, again ask partner #1 the sensations in his or her mouth, and again ask him or her to identify the flavor of the candy. Record.

7. After you've finished recording the information for step 6, tell partner #1 to open his or her nose and immediately describe any differences in the sensations in his or her mouth. Record these observations in your data table, and then ask the volunteer to identify the flavor of the candy.

8. You may now reveal the true flavor of the candy. Record it on the sheet of paper below your data table.

9. Change roles and repeat the activity.

Directions: The Nose Knows

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Student Demo