Chapter 8 Magnetism 8th Grade Putman

A device that increases or decreases voltage in a power line is a ____.

• transformer
• generator 
• commutator
• motor

Current that does NOT reverse direction is called ____. 

• magnetic current
• direct current
• circuit current
• alternating current

The location of the strongest magnetic forces is the ____.

• magnetic domains
• magnetic fields
• magnetic poles
• electromagnets

Current that reverses direction in a regular pattern is called ____. 

• direct current 
• circuit current
• magnetic current
• alternating current 

The region around a magnet where the magnetic forces act is the ____.

• magnetic field
• magnetic pole
• magnetic domain
• electromagnetic pole

Objects that keep their magnetic properties for a long time are called ____.

• temporary magnets
• permanent magnets 
• magnetic domains
• electromagnets

A device that uses an electromagnet to measure electric current is a(n) ____.

• generator
• commutator
• galvanometer
• electric motor

The function of an electric motor is to change ____.

•  mechanical energy to electrical energy
• electrical energy to chemical energy
• chemical energy to electrical energy
• electrical energy to mechanical energy 

The function of a generator is to change ____. 

• mechanical energy to electrical energy
• electrical energy to mechanical energy 
• electrical energy to chemical energy
• chemical energy to electrical energy 

A dry-cell battery produces ____.

•  an alternating current
• a direct current
• both direct and alternating current
• the same current that a generator produces