Attract and Repel
When the opposite poles (north and south) face each other
This is where the attractive strength of a magnet is greatest.
The poles
Objects with an equal number of protons (positive charges) and electrons (negative charges) have what type of overall charge?
Neutral Charge
The buildup of electrical charge on material is called _______.
Static Electricity
The invisible field around a magnet is called what?
Magnetic Field
When do magnets repel?
When two of the same poles face each other (like north and north or south and south)
A compass points to which pole?
The magnetic north pole
If object A has a negative charge, and it attracts object B, that means object B has what type of charge?
Positive Charge
What kind of electricity involves a build up of electrons (negative charges)?
Static electricity
Iron fillings placed around a magnet can help show us what?
The size and shape of the magnets magnetic field
What happens to the attraction of two magnets as the get farther away from each other?
The attraction between them becomes weaker
When a magnet is cut in half, what happens?
Two new magnets with a north and south pole are created
When one part of a balloon is rubbed with wool, the wool gives up electrons to the balloon. The balloon will cling to other objects because it has a _________.
Negative Charge
How does static electricity help a balloon stick to the wall?
All the negative charges in the balloon attract to the positives in the wall, and repel the negative in the wall
The Earth's magnetic field helps protect us from what?
Harmful sun rays and solar winds
Elizabeth has a glass rod, heated rubber, frozen plastic, and an iron nail. Which object is attracted to a bar magnet.
The iron nail
How does density (thickness) of a nonmagnetic object affect the strength of two magnets?
The move dense an object between two magnets, the weaker the strength of the magnets.
A neutral object that gains more electrons than protons now has what type of charge?
Negative charge
Why to the hairs on our head stand up after rubbing a balloon on our head?
All the electrons (negative charges) have been transferred to the balloon and our hair is now positively charged and trying to reach the balloon.
The Earth's magnetic field is powered by what?
The liquid iron and nickel moving around the solid inner core of the Earth.
Two objects have collected static electricity with the same charge. What would the objects do when placed near each other?
They repel each other
How does the magnetic field of a magnet connect its two Poles?
There is an invisible oval going from the north pole around to the south pole
If an object has 8 protons and 10 electrons, what type of charge should the object have?
A negative charge
What causes our clothes to stick together when coming out of the dryer?
As the clothes rub together static charge is created between the clothes, causing protons (positive charges) to move to onto one side of our clothes and electrons (negative charges)to move to the other side. The opposite charges attract together like magnets
When the solar winds of interact with the Earth's magnetic field, what is created as a result?
The Auroras, or the Northern and Southern Lights