Ciencia / Technical And Physical Phenomena. Fenomenos Fisicos. Experimentos

Technical And Physical Phenomena. Fenomenos Fisicos. Experimentos

Ensayos: Technical And Physical Phenomena. Fenomenos Fisicos. Experimentos
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Enviado por:  Kate  22 junio 2011
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ctricity and what not. For them we will build an electric circuit, and test if it passes the power of various elements such as a spoon, a string, a pencil, a pen, ...

# Hypothesis: You have to write here, with which elements you think the electricity can pass and are good conductors, and which aren´t good.

# Experiment: For do the experiment you have to do... **You need: for each group will need a normal battery of 4.5 volts, a small light bulb, three wires and various objects like scissors, a spoon, rope, wire, nails, pencil, foil, etc. Switch the battery and the bulb as shown in the picture. Then you prove each of the objects you have.

• •

# Result: The bulb will light up every time we use a metal object, gold, silver, copper, lead, ... And do not light up when we place some wood, plastic, ceramic ...

#Scientific explanation: Drivers are all those materials or elements that allow cross the stream flow or moving electric charges. If the bulb lights mean that the material used is a good conductor of electricity. Those with the bulb does not light are insulators.

Experiment: Magnetism

# Question: Build a compass in class.

# Hypothesis: You have to write here, what do you think if you build a compass. How does it work? what use is it?

# Experiment: **You need: A needle, a magnet and a piece of thread. • • Rub the magnetic needle always in the same direction. Tie the string in the middle of the needle and let it hang.

# Result: The needle will always be in the same direction, pointing the North.

# Scientific explanation: When we hang the magnet by a thread, said magnet marks the earth's magnetic poles. These poles are related to the geographic poles we know. Thus the magnet marks the north of the land. The compass has a magnet inside that spins freely, and that shows us the same magnet north and south. In this way we also know where the east and west. Therefore, the compasses are useful to guide anywhere on earth.

Experiment: Aggregation States This

experiment will be divided in 3 activities, to can see different aggregation states. 1º Clouds: Evaporation and condensation # Question: Let warm water in a glass jar, and then we put an ice on top. # Hypothesis: What do you think will happen when you put the ice on top of the jar? # Experiment: **You need: Material: Microwave (stove), glass jar, ice ... • Some water in the jar and put it in the microwave with the lid without castle completely. • • warm up and take it out of the microwave. Close the bottle well and put the ice on the lid.

# Result: Cloud forms in the superrior the boat. # Scientific explanation: Clouds are visible masses of water droplets formed, which are suspended in the atmosphere. The clouds form because they are concentrations of water vapor that evaporates from rivers, seas and so on., and that upon reaching the upper layers of the atmosphere cools and condenses. The shape and size of the clouds depends on several factors: the speed at which they are trained, t ...



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