Question 1: Describe how your breathing changes during aerobic exercise compared to resting. Include details about oxygen intake and breathing rate.

Answer: During aerobic exercise, breathing rate and oxygen intake increase to supply more oxygen to the muscles, whereas at rest, breathing is slower and oxygen intake is at a normal, lower level.

Question 2: Explain the main difference between aerobic and anaerobic exercise in terms of energy production in the body.

Answer: Aerobic exercise produces energy using oxygen and is sustained over longer periods, while anaerobic exercise produces energy without oxygen and is used for short, intense activities.

Question 3: List three examples of aerobic activities and three examples of anaerobic activities.

Answer: Aerobic activities: running, cycling, swimming. Anaerobic activities: sprinting, weightlifting, jumping.

Question 4: Describe what happens in your muscles during anaerobic exercise that causes muscle fatigue.

Answer: During anaerobic exercise, muscles produce lactic acid as a byproduct, which can build up and cause muscle fatigue and soreness.

Question 5: Explain why aerobic exercise is considered beneficial for cardiovascular health.

Answer: Aerobic exercise strengthens the heart and lungs, improves circulation, reduces blood pressure, and enhances overall cardiovascular efficiency.

Question 6: Draw a simple diagram of the human respiratory system showing the pathway of air from the nose to the lungs. Label the nose, trachea, and lungs.

Answer: A correct sketch would show a simplified pathway starting at the nose, leading to the trachea, and then branching into the lungs. Labels clearly identify each part.

Question 7: Sketch a diagram to illustrate how the muscles use oxygen during aerobic exercise, including the roles of the blood and lungs.

Answer: A proper diagram would depict oxygen molecules moving from the lungs into the blood, which then transports oxygen to the muscles. Muscles are shown using oxygen for energy production during aerobic exercise.

Question 8: Identify and explain two physical signs that indicate your body is engaging in anaerobic exercise.

Answer: Signs include rapid breathing and muscle burning or fatigue due to lactic acid build-up.

Question 9: Describe how the body recovers after anaerobic exercise. Include parts of the body involved.

Answer: Recovery involves breathing returning to normal, removal of lactic acid from muscles via the bloodstream, and muscles repairing minor damage, primarily involving the lungs, heart, and muscles.

Question 10: Explain why hydration is especially important during intense anaerobic activity.

Answer: Hydration helps maintain blood volume, aids in removing waste products like lactic acid, and prevents dehydration, which can impair performance and recovery.