Question

section: fitness & exercise

1. which component of fitness is improved by running?

a) flexibility
b) muscular strength
c) cardiovascular endurance
d) balance

1. how many minutes of moderate to vigorous physical activity should kids get each day?

a) 15 minutes
b) 30 minutes
c) 60 minutes
d) 90 minutes

1. push - ups primarily strengthen which muscle group?

a) quadriceps
b) chest and triceps
c) hamstrings
d) calves

1. which of the following is not a component of physical fitness?

a) speed
b) power
c) flexibility

Explanation:

Question 1

Running is an aerobic activity that challenges the heart and lungs to supply oxygen, improving cardiovascular endurance. Flexibility (A) relates to joint range, muscular strength (B) to muscle force, and balance (D) to stability—none match running's primary benefit.

Guidelines recommend kids (ages 6 - 17) get 60 minutes of moderate - to - vigorous physical activity daily. 15 (A), 30 (B), and 90 (D) minutes don't align with standard health recommendations.

Push - ups involve pushing the body up, which mainly activates the chest (pectoralis) and triceps muscles. Quadriceps (A) are for legs, hamstrings (C) for leg flexion, and calves (D) for ankle movement—these aren't the primary focus of push - ups.

Answer:

C) Cardiovascular endurance

Question 2