Part A. Vocabulary Review Directions: Complete the following sentences using the terms listed below. magnetism magnetic poles magnetic domains turbine electromagnet repel commutator generator electromagnetic induction alternating current direct current galvanometer transformer electric motor 1. The regions on a magnet where the magnetic force is strongest are called . 2. The south pole of a magnet will the south pole of another magnet. 3. A device that uses an electromagnet to measure electric current is a(n) . 4. A device used to increase or decrease the voltage of current in a'power line is a(n) . 5. A switch that regularly reverses the current in some motors is a(n) 6. Current that flows in only one direction through a wire is called 7. A large wheel that rotates when pushed by water, wind, or steam. 8. When current in a circuit reverses its direction in a regular pattern, it is called . 9. The properties and interactions of magnets are referred to as . 10. Groups of aligned atoms in a magnet are called . 11. A(n) is formed by placing a piece of iron inside a current- carrying coil of wire 12. A machine that changes electrical energy to mechanical energy is a(n) used to do work such as turning a fan. 13. A device that produces an electric current by rotating a coil of wire in a magnetic field is a(n) 14. The process by which moving a wire through a magnetic field produces an electric current is

Question

Part A. Vocabulary Review Directions: Complete the following sentences using the terms listed below. magnetism magnetic poles magnetic domains turbine electromagnet repel commutator generator electromagnetic induction alternating current direct current galvanometer transformer electric motor 1. The regions on a magnet where the magnetic force is strongest are called . 2. The south pole of a magnet will the south pole of another magnet. 3. A device that uses an electromagnet to measure electric current is a(n) . 4. A device used to increase or decrease the voltage of current in a'power line is a(n) . 5. A switch that regularly reverses the current in some motors is a(n) 6. Current that flows in only one direction through a wire is called 7. A large wheel that rotates when pushed by water, wind, or steam. 8. When current in a circuit reverses its direction in a regular pattern, it is called . 9. The properties and interactions of magnets are referred to as . 10. Groups of aligned atoms in a magnet are called . 11. A(n) is formed by placing a piece of iron inside a current- carrying coil of wire 12. A machine that changes electrical energy to mechanical energy is a(n) used to do work such as turning a fan. 13. A device that produces an electric current by rotating a coil of wire in a magnetic field is a(n) 14. The process by which moving a wire through a magnetic field produces an electric current is

Answer 1

1. Magnetic poles2. Repel3. Galvanometer4. Transformer5. Commutator6. Direct current7. Turbine8. Alternating current9. Magnetism10. Magnetic domains11. Electromagnet12. Electric motor13. Generator14. Electromagnetic induction

Answer 2

## Step 1The first sentence is about the regions on a magnet where the magnetic force is strongest. These regions are known as magnetic poles.## Step 2The second sentence is about the interaction between the south poles of two magnets. According to the basic principles of magnetism, like poles repel each other.## Step 3The third sentence is about a device that uses an electromagnet to measure electric current. This device is known as a galvanometer.## Step 4The fourth sentence is about a device used to increase or decrease the voltage of current in a power line. This device is known as a transformer.## Step 5The fifth sentence is about a switch that regularly reverses the current in some motors. This switch is known as a commutator.## Step 6The sixth sentence is about current that flows in only one direction through a wire. This type of current is known as direct current.## Step 7The seventh sentence is about a large wheel that rotates when pushed by water, wind, or steam. This wheel is known as a turbine.## Step 8The eighth sentence is about current in a circuit that reverses its direction in a regular pattern. This type of current is known as alternating current.## Step 9The ninth sentence is about the properties and interactions of magnets. These are referred to as magnetism.## Step 10The tenth sentence is about groups of aligned atoms in a magnet. These groups are known as magnetic domains.## Step 11The eleventh sentence is about a device formed by placing a piece of iron inside a current-carrying coil of wire. This device is known as an electromagnet.## Step 12The twelfth sentence is about a machine that changes electrical energy to mechanical energy. This machine is known as an electric motor.## Step 13The thirteenth sentence is about a device that produces an electric current by rotating a coil of wire in a magnetic field. This device is known as a generator.## Step 14The fourteenth sentence is about the process by which moving a wire through a magnetic field produces an electric current. This process is known as electromagnetic induction.

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