There are many possibilities! Let´s analyze them as a class.
100
What is a circle of energy called?
A circuit!
100
Which of the following objects is ATTRACTED to a magnet? (Name all of them!)
1) Aluminum paper
2) An iron nail
3) A steel file cabinet
4) Dental floss
5) My plastic bracelet
100
Name the components of the electromagnet.
Energy source, wire, switch, coils, core.
100
What is a smooth surface that reflects light in the same direction and can show us things like our own face or what is behind us in a car?
A mirror.
200
What are three of the four things that are evidence of energy?
Motion, sound, light, and heat
200
What does a wire do in a circuit?
It conducts electricity (carries the electric current) from one component to another.
200
If I put the seat of a plastic chair between two magnets, will the MAGNETIC FORCE be stronger or weaker than if I put 5 pieces of paper between two magnets?
The magnetic force will be weaker.
(Why?)
200
What did we use as the core of the electromagnet?
The rivet.
200
What are the colors that mix together to make up white light?
Red, Orange, Yellow, Green, Blue, Indigo, Violet (ROY G BIV)
Where on a lightbulb do you need to connect the wires in a circuit in order for that lightbulb to light up?
The contact points.
300
In the diagram that Ms. Toni will show you, which object becomes a TEMPORARY magnet?
Both the nail and the paperclip.
(How do you know?)
300
What are two of the three things that can make an electromagnet stronger?
Heavier wire, more coils around the core, more energy source (D-cells).
300
What happens when light reflects off of an object?
The lightwaves bounce off of the surface and reach our eyes.
400
When I play a guitar, is there energy present? What is your evidence?
Yes! The guitar strings are moving.
400
Name 5 things in the room that are INSULATORS of electricity.
Let´s analyze these answers as a class.
400
Look at the diagram that Ms. Toni will show you. In this diagram, someone is holding these magnets together. What will happen when the person lets go? Draw a diagram.
The bar magnet will push away from the donut magnets.
(Why?)
400
What do you call the orb surrounding the wire that makes the core of the electromagnet attract washers?
Electromagnetic field.
400
When light hits our BLUE recycling bin, what happens to the lightwaves of the other colors (red, orange, yellow, green, indigo, and violet)?
They are absorbed by the recycling bin.
500
You want to know when electricity is flowing through a circuit. Which of the following is evidence that electricity is flowing?
a) One of the components gets hot.
b) The motor stops spinning.
c) The switch is open.
d) A lightbulb shines.
a) and d)
500
In a circuit, what side of the D-cell does energy flow FROM? What side does it flow TO?
Energy flows FROM the negative end of the battery. Energy flows TO the positive end of the battery.
500
If you are in place that you know which direction is north, and you want to find out which side of your donut magnet is north, how could you do it?
Hang the donut magnet on a string, put the straw through the donut magnet, and the side of the donut magnet that faces north is the north side.
(why does this work?)
500
What kind of metal would you choose to use for the rivet (core) when you are trying to make an electromagnet?
Steel or iron.
(Why?)
500
Define transparent, translucent, and opaque.
Transparent: Lets all light through.
Translucent: Lets some light through.
Opaque: Doesn´t let any light through.