Science: Middle School: Grades 6, 7 and 8 Quiz - Health - Exercise and Fitness (Questions)

This Science quiz is called 'Health - Exercise and Fitness' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

It costs only $12.50 per month to play this quiz and over 3,500 others that help you with your school work. You can subscribe on the page at Join Us

An important aspect of science is maintaining good health. The body needs food for energy and growth but too much food or too little food can cause some serious health issues. To help alleviate those health issues, developing a good, balanced exercise and fitness program in your daily routine is very important.

What needs to be highlighted here is a “balanced” exercise and fitness program. Why balanced? Because different parts of the body need different exercises performed to strengthen them. In addition, if the body’s muscles are not exercised regularly, atrophy can set in. Atrophy is the wasting away and shrinking of a muscle due to none use. In severe cases, atrophy of the muscle can cause deformities in the body.

To address the different needs of the body, and to prevent atrophy, there are five basic types of exercises. These are:

Aerobic Exercise

Aerobic exercises are also often referred to as cardiovascular exercises. They include any sustained, rhythmic activity that affects large muscle groups. Examples of Aerobic exercises include: brisk walking, jogging, swimming, cycling, in-line skating and other nonstop vigorous exercises. Regular aerobic exercise benefits your cardiovascular system.

Anaerobic Exercise

Anaerobic exercises are very rigorous exercises. They involve stop and go exercises that include: sprint racing, basketball, football, baseball and weight lifting.

Isometric Exercises

Isometric exercises are strength-building exercises such as weight lifting.

Isotonic Exercises

Isotonic exercises are those exercises that have no over-extended joint movement but rather tension is developed within the muscle to support a load. Examples of Isotonic exercises include: push-ups, pull-ups and crunches.

Isokinetic Exercises

Isokinetic exercises involve muscle activity that is performed at a constant angular speed. Tension remains constant while muscles shorten or lengthen. Examples of Isokinetic exercises would include exercise using a work-out machine like a Bowflex or a treadmill. A machine that gives you resistance.

Whenever you start an exercise/fitness program, you should never just jump into doing the exercises. This can injure muscles, joints and even bones. To prevent injuries, the workout should be done in three phases.

THE WORKOUT

1. The Warm-up. Injuries are more likely to occur when muscles, tendons, and ligaments are “tight” or “cold”. The initial warm-up should begin with a whole-body activity, such as walking and swinging your arms (lasting about 5 minutes). The next 5 minutes should include stretching the major muscles such as the shoulders, the back, and calf muscles.
2. The Work-out. Should include aerobic exercises.
3. The Cool Down. Slow your activities and then stretch your muscles (much like in the warm-up).

Maintaining Hydration

Strenuous physical activity requires an increase in liquids, especially in hot conditions, to prevent hydration.

Benefits of Exercise

Some of the benefits of exercise include the following:

• good muscle tone
• improved posture and appearance
• increased resistance to injury
• loss of body fat
• increased basal metabolism
• lower blood pressure
• reduced risk of cardiovascular disease
• increased resistance to disease
• improved quality of sleep

When you are young you often tend to think that you do not need to exercise. Nothing could be further from the truth. The fact is, you are never too young to start exercising. In fact, the younger you are, the better chance you have of becoming a healthier and physically stronger adult. So if you haven’t already started a fitness program, challenge yourself to begin today. Then look at the following ten question and see how much you have learned about exercise and fitness.