Question

Learning Task No.3: Read the instructions in a Do-it-yourself Science Project below. Follow each step. Describe your output in your portfolio answer sheet

Answer 1

Answer:nasa picture po yung sagot bakatin niyu nalang po

Explanation:sa mga kagaya ko lang po na pinapa drawing ng microscope at lalagyan ng label

tips :sana po makatulong

Answer 2

Answer:

Here is required answer.

Explanation:

                         Phone Book Rope Pull

Summary of the Activity:

Students attempt to separate two telephone index's that have every other page interlaced with the other. Students will not be able to do this. It takes about 36,000

Newtons of force to separate two 800 page phonebooks.

1. Background on Activity [Primary Facilitator]

1. The principal behind this activity is friction. Friction is the force that opposes sliding motion between two objects. While the pages of a telephone index may feel smooth to the touch the combination of all the pages rubbing against the

adjacent ones is enough to make it un-separable by human power, (even mealy under the weight of the other pages)

2. Distribute Materials to Each Group [All Facilitators]

- 2 phonebooks (prepared as detailed below)*

- 2 lengths of 10mm Polypropylene rope*

- Drill*

- 12mm Drill bit*

3. Experiment Procedure [Primary Facilitator]

Preparation

1. Drill 3 12mm holes about 30 mm from the spine of the phonebook (this is for the rope to connect through)

2. Interlace the pages of the telephone index by flipping one down at a time page 1 to page 1 page 2 to page 2 etc.

3. Weave the rope through the holes and tie it off.

Experiment procedure:

4. Explain how the two phonebooks are put together (remind them there is no adhesive involved) and the ropes are strictly through the binding and have nothing to do with holding the phonebooks together.

5. Ask for two volunteers and have them hold a rope on each end and pull at the

same time in opposite directions.

6. Ask for some more volunteers to help pull the rope on each end, but make sure there are an equal number of volunteers on each rope. Eventually have everyone pull on one of the two ropes.

4. Facilitator Questions and Hints [Group Facilitators]

• 1. Do you think the class can separate the telephone indices?

• i. ANSWER: no

• 2. How much force do you think it will take?

• i. ANSWER: It depends on the size of the telephone indices, 2 5cm thick books will take about 35,000 N of force to separate.

• ii. For a demonstration of this refer to the American Television show,

5. Discussion/Take Away[Primary Facilitator]

 Ask the audience why they think that happened? Why didn’t the phonebook pull apart despite the number of increasing people pulling on it?

 Ask “what is friction?” and “what are the different types?” Whether someone is able to answer or not, still explain the proper definitions and how it applies to the phonebook.

 Explain other real-life situations and encounters which involve friction.

Safety

It is best to do this activity outdoors in a grassy area or on some other soft surface. While the telephone indices will not separate there is a chance the rope will tear through the spine of the book which may cause student to fall an injure themselves.

For more such questions :

https://brainly.ph/question/10183638

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