Key Question:
What are the defining characteristics of a magnetic interaction?
Our results for our 1st project were:
Exploration 1: If a magnet is brought near another magnet, what happens to
the other magnet?
(Brought them close together)
What happens to the second magnet? They either attract or repel.
When two magnets interact, they can either attract or repel each
other. Our evidence is that one side repelled (motion) and one side attracted
(motion).
Exploration 2: If a magnet is brought near a metal, what happens
to the metal?
Table: Observation of How Metals Interact with a Magnet
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Material
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Step 1
What happens when the magnet is brought closer and closer
to the piece of material?
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Step 2
What happens when the magnet is turned over and brought
closer and closer to the piece of material?
How does this differ, if it at all, From the previous
step?
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Steel
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Attracted
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Attracted
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Copper
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Repelled
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Repelled
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Aluminum
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Repelled
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Repelled
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Nickel
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Repelled
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Repelled
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Did
the magnets interact with all the metals, with none, or with some? Only some of
the metals/ one metal.
When
a magnet and a magnetic material interact, they either attract or repel each
other. My evidence is all based on the table up above (interacted through
motion).
Exploration
3: Is a compass needle a magnet?
(We
brought a magnet close to a compass and observed to see if the rotation
changed)
Would the distance between a magnet and a compass affect
how much the compass needle turns?
Distance between Magnet and Compass
and the number of Degrees Compass turned
Distance between magnet and compass
(cm)
Number of degrees
5
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70
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10
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54
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15
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40
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20
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22
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25
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14
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30
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8
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If
the distance between a magnet and compass increases, what happens to the number
of degrees the compass needle turns?
The
manipulated variable in this exploration is the distance between the magnet and
the compass.
The
responding variable in this exploration is the number of degrees the compass
needle is turning.
What
variables are controlled in this experiment?
The
magnet, place where compass is set, type of magnet, type of compass, how magnet
is held, size of compass, and size of magnet.
Conclusion:
The further the distance between the
magnets and compass, the less number of degrees the compass needle turns.
Activity 4: The electric circuit interaction
Key questions:
What are some of the defining characteristics of and electric circuit interaction?
What are some variables that influence the electric circuit interaction?
Experiment 1: When does an electric circuit interaction occur?
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How
it would look.
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How
many connections are there to each element in the circuit (one connection, two
connections, or three)?
There are more than two connections.
When does an electric circuit
interaction occur?
When all metal objects are connected
to each other.
Exploration 2: What types of
materials are necessary for an electric circuit interaction to occur?
Table
1: Materials that allow the bulb to glow
Material
Does the bulb glow?
Iron nail
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Yes
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Straw
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No
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Chalk
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No
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Metal nail
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Yes
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Pipe cleaner
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Yes
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Golf pick
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No
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Bobby pin
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Yes
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Paper clip
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yes
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In order for an electric circuit interaction
to occur, the type(s) of material that must be included in the circuit is (are)
metal material. My evidence is observed all materials that lit up the bulb and
recorded down whether they were metal or not.
Exploration 3: How can you hook up
more than one bulb to a cell?
Series circuit: Is where there are two or more bulbs attached to one cell.
If one of the bulbs were to be
unscrewed from its socket the other goes out.
Parallel circuit: Is where there are two bulbs are attached to one cell.
If one of the bulbs in a parallel
circuit where to be unscrewed the other bulb would stay lit.
Why do you think that the results
for both parallel and series circuit were different when one of the bulbs were
unscrewed?
They were different because in a
parallel circuit the two bulbs do not rely on each other but in a series
circuit they do.
Exploration 4: If the number of
cells in the circuit increases, what happens to the brightness of the bulb?
Is the bulb in a two cell and one
bulb circuit brighter, dimmer, or equally bright as the one cell, one bulb
experiment?
It is brighter.
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A
bulb with two cells
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What happens to the brightness of
the bulb when an additional battery is added to the circuit? It will get allot
brighter but will soon burn out then or immediately because of the high
voltage.
If the number of cells in the
circuit increases the brightness will increase.
Exploration 5: If the number of
cells in the circuit increases, what happens to the amount of electric current
in the circuit?
The more cells in a circuit
interaction, the more voltage.
What kinds of objects are involved
in an electric circuit interaction?
Metal objects like bulb cells,
cells, and switches.
What is evidence that an electric
current interaction has occurred?
When the light bulb of the circuit
lights up.
What happens when there is a break
in an electric circuit loop?
The bulb goes out.
You
can but two types of holiday lights.
In
type A, when you plug in the string of lights and one bulb burns out, all the
bulbs go out.
In
type B, when you plug in the string of lights and one bulb burns out, the other
bulbs stay on.
Type
A is a series circuit and type B is a parallel circuit.
Type A Series circuit
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Type
B Parallel circuit
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Suppose you
have a room with two different lamps. Do you think the lamps are connected
together in series or in parallel? How do you know?
Parallel because you wouldn't put two lamps right next to each other when you already have one right? So the possibility may be that they are parallel because their plugs probably will be in different sockets. So if one of the bulbs burnt out the other would still stay lit. Even if they were both connected to a extension cord and one bulb went out, it still would not matter unless the extension cord was unplugged.
Answers
to the key Questions:
What
are the defining characteristics of an electric circuit interaction>
When
you have evidence of the current like a bulb turning on.
What
are some variables that influence the electric circuit interaction?
Cells,
Bulbs, and wires.
Vocabulary
Manipulated variable:
A variable that is being deliberately changed in an experiment.
Responding variable:
A variable that is responding to the Manipulated variable in an experiment.
Parallel circuit:
A circuit with two bulbs attached to one cell that is not dependent on each
other.
Series circuit:
A circuit with two or more bulbs that are dependent on each other.
Interaction:
When two things are interacting and there is an effect.
Cell: Another
word for battery as in cell of power.
Overall
Work Grades
Rosmely:
Set up all Accounts, pictures and did her Activity 2 =33.3333~%
Abby:
Set up all accounts as well and did her Activity 3= 33.333~%
Emily:
Did Vocab, fixed the Activities, added the pictures and did 2 Activities=
33.333~%
+
100%!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
:)
