Especialidades JA/Regata de botes de juguete/Respuestas

Regata de botes de juguete

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Contenido

1

Dibujar un esquema de un barco (de vela) impulsado por viento que muestre las características pertinentes y cómo funcionan. Las características deben incluir pero no limitarse a botavara, casco, foque, quilla, vela mayor, mástil y timón. ¿Cómo las características que se eliminan comúnmente de los botes de juguete afectan la funcionalidad?

There are many websites that show the parts of a sailboat. Instructors should discuss that in toy boats, missing parts do affect movement such as: a missing keel may keep the boat from going straight; and a missing rudder would not allow the boat to be turned. One reference website is How Stuff Works - Sailboat

2

Dibujar un plano para un bote de juguete impulsado por una bandita elástica (gomita, liga) de un diseño de su elección que muestre las características pertinentes que difieren de un bote de viento.

These boats typically have a water paddle that is in some way connected to the hull with a rubber band. The paddle is wound that in turn winds the rubber band and motion is initiated with the paddle/rubber band is released. YouTube, Pinterest, and general searches on an internet web search will provide many videos and step-by-step instructions showing a multitude of designs.

3

Ser capaz de describir el principio de Arquímedes y cómo este principio se aplica a todos los barcos.

An upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces. A boat will float if the weight of the boat and all of its cargo is less than the weight of water that it displaces (62.4 lbs/cf or 998 kg/m3)

Water expands over a thousand times when it becomes steam. One may place a zip-lock baggie in a microwave with a teaspoon of water and see the vapor expand the baggie.

You can find more information on Wikipedia about Archimedes’ Principle.

4

Ser capaz de describir la primera ley del movimiento de Newton y cómo este principio se aplica a todos los barcos.

According to Newton's first law of motion, an object (boat) at rest will remain at rest unless acted on by an unbalanced force (wind, rubber bands, pushing, waves, paddles, etc.). An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force (opposing wind, friction of water, shore line, etc.).

5

Ser capaz de describir la tercera ley del movimiento de Newton y cómo se aplica este principio a un barco (de vela) impulsado por viento.

According to Newton's third law of motion, every action has an equal and opposite reaction. The wind imposes a force on a sail and the boat will move when the force can overcome the resistance from the boat in the water. The larger the area of the sail, the more wind "force" is collected to overcome the boat resistance. The lighter the boat, the less force needed to overcome resistance.

6

Ser capaz de describir la diferencia entre energía potencial y energía cinética. Discutir cómo y cuándo un bote de juguete impulsado por una bandita elástica utiliza ambos tipos de energía.

The rubber band contains the energy. When the rubber band is wound up, the energy is stored energy = potential energy. When the rubber band unwinds it is releasing energy by moving = kinetic energy.

7

Usar materiales reciclados para hacer al menos un bote de juguete impulsado por viento (de vela) y al menos un bote de juguete impulsado por bandita elástica. Cada bote de juguete no será más de 4 pulgadas (10 cm) de ancho y será adecuado para viajar en un carril de agua de 6 pulgadas (15 cm) de ancho.

YouTube, Pinterest, and general searches on an internet web search will provide many videos and step-by-step instructions showing a multitude of designs.

8

Participar en una regata organizada de botes impulsados por viento (de vela) utilizando un bote que haya construido para completar esta especialidad.

Two or more "tracks" may be made with 6-inch house aluminum guttering, sealing the ends, and filling with water. At the start, participants are to use same size straws to blow on sails and the first boat to the end is the winner. Winners from each heat are then paired together until a final winner is determined for the group.

9

Participar en una regata organizada de botes con banditas elásticas utilizando un bote que haya construido para completar esta especialidad.

Two or more "tracks" may be made with 6-inch house aluminum guttering, sealing the ends, and filling with water (may be the same tracks as used for the wind boat race). The participants are to place a wound-up boat in the water and released at the start of the race. The first boat to the end is the winner. Winners from each heat are then paired together until a final winner is determined for the group.

10

Identificar y contar una historia breve de al menos dos casos en la Biblia que describen botes/objetos flotantes y dos que desafían el principio de Arquímedes.

• Noah's Ark: Genesis 7
• Baby Moses in the Nile: Exodus 1
• Jonah's sea voyage: Jonah 1
• Paul's shipwreck: Acts 27
• Defy buoyancy: Jesus walking on water -- Matthew 14, Mark 4, and John 6
• Defy buoyancy: Floating ax head -- 2 Kings 6