magnetism What is an invisible force of certain objects which attracts other objects made of iron and other metals? magnet What is a metallic object that attracts other objects made of iron, steel and other certain metals? repelling What is the pushing away of two like magnetic poles? attracting What is the pulling together of two opposite magnetic poles? magnetic poles What are the south and north ends of a magnet where the magnetic force is strongest? magnetic force What is the push or pull of a magnet? electromagnet magnetic field lines of force compass What type of magnet uses electricity in a coil of wire around an iron bar to produce a magnetic force? What is the space surrounding a magnet in which the force of a magnet acts? What are the invisible lines connecting north and south poles in a magnetic field? What device uses a tiny bar magnet to find north and south on the Earth? Earth What behaves like a large magnet and repels harmful particles from the sun? iron Which metal can be easily turned into a magnet? magnetite atoms What black rock contains iron and was used as a compass by people long ago? What are the small particles inside a bar of iron that act like tiny magnets? bar magnet What type of magnet has poles on opposite ends? horseshoe What type of magnet has been bent so that the poles are near each other? magnetize What word means to make a magnet by causing the atoms of an iron bar to line up in the same direction? core What part of the earth contains molten iron which produces the earth's magnetic field? Antarctica Where is Earth's southseeking pole? Arctic Circle Where is Earth's northseeking pole? force What is a push or a pull?