Science Quiz 4/4 Flashcards
What is a magnetic field?
The area around a magnet where its magnetism can affect other materials
What are a magnet’s 2 poles?
North and South
What happens when you cut a magnet in half?
There will be two magnets, each with a north and south pole
What are magnets?
Metals that are capable of generating forces of attraction and repulsion
List three metals that magnets attract
Iron, Nickel, and Cobalt
List three magnetic objects
Paper clips, a steel can, iron nails
List three nonmagnetic objects
Plastic, aluminum, and brass
What is a magnetic force?
The attraction or repulsion that arises between charged particles because of their motion
Fill in the blank:
Opposites ___________
Attract
Fill in the blank:
Like poles ___________
Repel
What is an electromagnet?
A magnet created by wrapping a coil of wire with a current running through it around a core of material that is easily magnetized (like iron)
Fill in the blank:
More wraps = ___________
Stronger magnetic field
Fill in the blanks:
A magnetic field produced by a current: has ___________, can be turned ___________, can have direction___________, and can have ___________ changed
1: strength and direction
2: on or off
3: reversed
4: strength
Fill in the blank:
The electric field produces a ___________ field
Magnetic
Any wire that has an electrical current flowing through it is surrounded by what?
A magnetic field
What shape does the magnetic field around the wire form?
A circle
What object shows the circle?
A compass
T or F: Electromagnets aren’t common
FALSE
