Don't stop playing with your hair.In "The Past, Present, and Future of Looking Good," (p. 12), you got the lowdown low·down n. Slang The whole truth: gave us the lowdown on what happened at the party. lowdown low (inf) n he gave me the lowdown on it → on hair. Here are two activities to see what your tresses can do. Part A: How strong is your hair? You Need: 3 strands each of the following hair types: naturally curly; naturally straight; permed perm Informal n. A permanent. tr.v. permed, perm·ing, perms To give (hair) a permanent. Adj. 1. ; color-treated * tape * scale * box of large paper clips * table To Do: 1. Loop one strand of hair through a slightly opened paper clip. Use a piece of tape to secure the hair to the clip. 2. Tape the other end of the hair to the table. You should have a strand of hair hanging from the table with a paperclip dangling from the hair's end. 3. Gently add paper clips, one at a time, to the opened clip. 4. Continue until the strand of hair breaks. 5. Weigh the paper clips. Remember to subtract the one clip that broke the hair. 6. Record the weight on the data table. 7. Repeat the experiment twice with the same type of hair. Then find the average weight the hair type can hold. (Average = total weight of trials divided by the number of trials) 8. Repeat Steps 1 to 7 for the other hair types. Conclusions: Which hair type is the strongest or weakest? Wily? Don't Stop Now: Research and report, on the following: 1. How does a perm Perm (pyĕrm), city (1990 est. pop. 1,090,000), capital of Perm Territory, NE European Russia, on the Kama River. It is a transfer center for rail and river traffic and a major producer of machinery in the Urals industrial region. work? 2. Why does hair go limp or frizz frizz 1 tr. & intr.v. frizzed, frizz·ing, frizz·es To form or be formed into small tight curls or tufts. n. 1. The condition of being frizzed. 2. A small tight curl or tuft. with the weather? Hint: Think hydrogen bonds. Part B: Why does this trick make hair curl? You Need: 1 strand of straight hair To Do: 1. Use one hand to hold the strand of hair tightly between your thumb and index finger. Dangle dangle Nursing A popular term for the first movement a Pt is allowed, either after surgery under general anesthesia, or 'under local', where the recuperee allows his/her feet to dangle over the side of the bed the hair. 2. With your free hand, squeeze the top of the hair between your thumb and index finger. Use your index fingernail fin·ger·nail n. The nail on a finger. to scratch down the length of the hair strand. (Imagine using a scissors' edge to curl ribbons on a gift). Be careful not to break the hair. 3. Repeat until the strand of hair coils. Conclusion: Why did the hair twist and curl? Hint: What did you do to the cuticle cuticle /cu·ti·cle/ (ku´ti-k'l) 1. a layer of more or less solid substance covering the free surface of an epithelial cell. 2. eponychium (1). 3. a horny secreted layer. , hair's waxy waxy (wak´se) 1. composed of or covered by wax. 2. resembling wax, especially denoting some combination of pliability, paleness, and smoothness and luster. covering?
Hair Type Trial Trial Trial Average
1 2 3
Straight
Curly
Permed
Color-
treated
PART B The cuticle is the waxy hair covering. It's made of overlapping and jagged cells. When your fingernail scratched down the hair strand, you pulled apart the overlapping cells on one side more than on the opposite side. This warped the hair. |
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