Page 39 - OPIC-Intermediate

Answer B:
In one of my science classes, we made a volcano model. We made a research and gathered
information about volcanoes. Then, we got materials to make the volcano. Most of the materials
were objects we can usually see. We used an empty bottle, baking soda, vinegar, detergent,
water, clay and tissue. We placed the water, detergent and vinegar in the bottle. Then, we
molded clay around the bottle to form a cone shape like a volcano. Afterwards, we wrapped
the baking soda in the tissue. Finally, we dropped the tissue in the bottle. The model volcano
erupted! We were marveled by the sight! We learned so much about chemical reactions.

Points to emphasize in answering:

Start by introducing what the project is.
[example: We made a model of a volcano in class.]

Provide detailed steps in doing the project.
- Transitions like ‘First’, ‘Then’, ‘Finally’, etc. help in organizing the steps.

Conclude the discussion with what you learned in the project.
[examples: We learned so much about chemical reactions.]

Vocabulary

model - a small object that represents a bigger object in detail
materials - tools to perform a given task
detergent - a cleansing substance
molded - shaped
clay- natural earthy material used for making pots and bricks
erupt - explode or break out
marveled - surprised or amazed by something
chemical reaction - a process in which one or more substances are changed into others

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