Directions: Perform the activity given below. Answer the questions after the activity in two (2) to
three (3) sentences only.
Problem:
How does oil decrease friction between objects in contact?
Materials: Hair, comb, and baby oil
What to do:
1. Get a comb and comb your hair. You will find it difficult to comb your
hair specially when it is long and dry.
2. Then, put drops of oil onto your hair. Then comb it again.
Questions: (5 points each)
1. What difference did you feel on combing your dry hair and the oily one?________________________
2. What kind of friction is being demonstrated?________________________
3. How will you reduce/decrease friction?________________________
three (3) sentences only.
Problem:
How does oil decrease friction between objects in contact?
Materials: Hair, comb, and baby oil
What to do:
1. Get a comb and comb your hair. You will find it difficult to comb your
hair specially when it is long and dry.
2. Then, put drops of oil onto your hair. Then comb it again.
Questions: (5 points each)
1. What difference did you feel on combing your dry hair and the oily one?________________________
2. What kind of friction is being demonstrated?________________________
3. How will you reduce/decrease friction?________________________
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Answers & Comments
Explanation:
1.there is a big difference.it is hard to comb it when dry but if it is oily it will be easy because of the greaseness of the oil when applied to hair.
2.fluid friction is being demonstrated
3.by lightly combing my hair it will reduce/decrease the friction
three (3) sentences only.
Problem:
How does oil decrease friction between objects in contact?
Materials: Hair, comb, and baby oil
What to do:
1. Get a comb and comb your hair. You will find it difficult to comb your
hair specially when it is long and dry.
2. Then, put drops of oil onto your hair. Then comb it again.
Questions: (5 points each)
1. What difference did you feel on co