Using regular found objects at home, like stick, cord, cartolina, and other more objects, construct

a simple machine which can lift up a given object/token. The token can be a styropor, a box or

any object which will not break if it falls. The goal of the game is to lift the object at a certain

height which the teacher will set.

Answer the following questions:

1. What kind of force does a muscle produce?

2. What is the function of the skeleton in the production of locomotion in animals?

3. Relate the structure of the muscles to another object in explaining its function?

4. What does the repeating longitudinal structure serve?

1. While under tension, the muscle may lengthen, shorten, or remain the same. Although the term contraction implies shortening, when referring to the muscular system, it means the generation of tension within a muscle fiber.

2. The skeleton provides to various animals support and protection and facilitates movement. Skeleton, the supportive framework of an animal body. The skeleton of invertebrates, which may be either external or internal, is composed of a variety of hard nonbony substances.

3. Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.

4. Longitudinal research serves two primary purposes: to describe patterns of change and to establish the direction (positive or negative and from Y to X or from X to Y) and magnitude (a relationship of magnitude zero indicating the absence of a causal relationship) of causal relationships.