Science Practice Quiz 179

Q1.Which two main structures are primarily involved in the movement of breathing?

A. Lungs and windpipe B. Nasal cavity and nostrils C. Diaphragm and rib cage D. Chest cavity and stomach

Q2.What is the primary function of hair present in the nasal cavity during inhalation?

A. To warm the inhaled air. B. To trap unwanted particles such as smoke, dust, and pollens. C. To moisten the inhaled air. D. To facilitate the sense of smell.

Q3.As per the provided text, what causes sneezing?

A. An allergic reaction to food. B. Irritation of the nasal cavity lining by particles that bypass nasal hair. C. A sudden change in atmospheric pressure. D. Excessive intake of cold air.

Q4.Which of the following health risks is explicitly linked to smoking in the provided text?

A. Diabetes. B. Heart disease. C. Cancer. D. High blood pressure.

Q5.What happens to the size of the chest cavity during breathing?

A. It remains constant. B. It decreases only during exhalation. C. It increases only during inhalation. D. It changes.

Q6.Besides smoke and dust, what other unwanted particle is specifically mentioned in the text as being present in the air around us?

A. Bacteria. B. Viruses. C. Pollens. D. Fungi.

Q7.What precaution should be taken when sneezing, according to the text, to prevent others from inhaling foreign particles?

A. To sneeze into a handkerchief. B. To cover your nose. C. To turn away from other persons. D. To hold your breath until the urge passes.

Q8.According to the provided text and diagram, which of the following accurately describes the movement of ribs and diaphragm during inhalation?

A. Ribs move back and the diaphragm moves down. B. Ribs move out and the diaphragm moves down. C. Ribs move out and the diaphragm moves back. D. Ribs move back and the diaphragm moves back.

Q9.As per the provided diagram, what happens to the ribs and diaphragm during exhalation?

A. Ribs move out, diaphragm moves down. B. Ribs move back, diaphragm moves down. C. Ribs move out, diaphragm moves back. D. Ribs move back, diaphragm moves back.

Q10.Activity 6.5 describes a simple model to understand the mechanism of breathing. Which of the following items is explicitly mentioned to be fixed to the forked end of the Y-shaped tube?

A. Two inflated balloons. B. Two deflated balloons. C. A thin rubber sheet. D. A wide plastic bottle.

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Science Practice Quiz 179