Download Chapter-36-four-square-questions_-answer

1-Magnetic Poles (Section 36.1)
Q1: What are the 2 ends of a magnet called?
North and South Pole
Q2: How are magnets similar to electric charges?
Likes repel and opposites attract
Q3: Can we separate the 2 ends of a magnet? Does every magnet have 2 ends?
No we cannot separate the ends of a magnet. If you break a magnet in half, now you have 2
smaller magnets. Every magnet has a north pole and a south pole.
2-Magnetic Fields and the Nature of Magnetic Fields (Section 36.2 and 36.3)
Draw the picture below and write a description in your own words:
Q4: What is a magnetic field? What are magnetic field lines?
A magnetic field is the space around a magnet where a magnetic force is exerted. Magnetic
field lines are lines that are drawn to represent the magnetic field.
Q5: What is the direction of the magnetic field outside a magnet? How does how close they are
mean?
The direction of the magnetic field outside a magnet is from North to South. The closer the
magnetic field lines are, the greater the strength of the magnetic field.
Q6: How can spinning electrons work together or work against each other?
A pair of spinning electrons can work together by spinning in the SAME direction which
results in a stronger magnet. They can work against each other by spinning in opposite
directions which cancels out their magnetic field.
Q7: What is 1 reason why every object isn’t a magnet?
One reason why every object isn’t a magnet is because the pair of spinning electrons that
make up its atoms are spinning in opposite directions so the electrons magnetic properties
cancel out.
3-Magnetic Domains (36.4)
Draw the picture below and write a description in your own words:
Q8: What is a magnetic domain?
A group (billions) of atoms aligned in the same direction of the magnetic field.
Q9: What is the difference between an iron nail and an iron magnet?
In an iron nail the domains are in random directions, whereas in an iron magnet the domains
are aligned in the same direction.
Q10: What happens when you bring a potentially magnetic material near a magnet?
The domains of the material become aligned (they are not random anymore).
4-Electric Currents and Magnetic Fields (36.5)
Draw the picture below and write a description in your own words:
Q11: What types of fields are created by the motion of an electric charge (electric current)?
A magnetic field and an electric field.
Q12: How can we increase the magnetic field intensity? By bending the wire into loops and
increasing the number of loops.
Q13: How is an electromagnet made (a temporary magnet)? An electromagnet is a currentcarrying coil of wire with many loops. The 3 basic parts needed is a battery, a coil of wire, and
a potentially magnetic material (such as a nail).