Do you save electricity? Check and take this quiz.
A circuit is a complete route or course to get electricity. Electricity only flows when the circuit is complete with no gaps.Here is an example of an electric circuit:
Do you understand something? Let´s try using these clue:
Now you can try to make a circuit, click here!!!. Answer also the questions!
Magnetism: Magnets are objects that produce an area of magnetic force called a magnetic field.
Do you want to see this force? MAKE A COMPASS!!!
- You need:
1. Steel needle.
2. Bar magnet.
3. Slice of cork.
4. Tape.
5. Small bowl.
6. Water.
- Step 1: To turn the needle into a magnet, stroke the end of the magnet slowly along it.
Repeat this in the same direction for about 45 secs. This magnetizes the
needle.
- Step 2: Place the magnetized needle on the slice of cork. Make sure that it will
not spin evenly. Tape the needle into place.
- Step
3: Fill the bowl nearly to the brim with water; and float the cork in it. Make
sure the cork is exactly in the middle
and can turn without rubbing on the edges of the bowl.
- The
Earth's magnetic field should now swivel the needle on the cork. One end of the
needle will always point to the north. That end is its north pole.
