Question

match the words in the first column to the best available answer in the second column.
raising a molecule to a higher energy level.
the continual movement of molecules that occurs when heat accelerates atoms.
creates the radio wave signals used in radar and microwave ovens.
the smallest particle; made up of one or more atoms.
uses a transmitter to emit radio waves called microwaves.
converts high voltage electricity into very short waves of energy.
energy that travels outward in straight lines.
current or field used to convey data from one place to another.
very short waves of electromagnetic energy.
flow of thermal energy through a substance.

1. radiation
2. magentron tubes
3. molecules
4. radar
5. magnetron
6. atomic motion
7. exciting
8. conduction
9. microwave energy
10. radio wave signal

Explanation:

• "Raising a molecule to a higher energy level" is called "exciting" (7).
• "The continual movement of molecules that occurs when heat accelerates atoms" is "atomic motion" (6).
• "Creates the radio wave signals used in radar and microwave ovens" is a "magnetron" (5).
• "The smallest particle; made up of one or more atoms" is a "molecule" (3).
• "Uses a transmitter to emit radio waves called microwaves" is "microwave energy" (9).
• "Converts high voltage electricity into very short waves of energy" is a "magnetron" (5).
• "Energy that travels outward in straight lines" is "radiation" (1).
• "Current or field used to convey data from one place to another" is a "radio wave signal" (10).
• "Very short waves of electromagnetic energy" is "microwave energy" (9).
• "Flow of thermal energy through a substance" is "conduction" (8).

Answer:

1. 7 - exciting
2. 6 - atomic motion
3. 5 - magnetron
4. 3 - molecules
5. 9 - microwave energy
6. 5 - magnetron
7. 1 - radiation
8. 10 - radio wave signal
9. 9 - microwave energy
10. 8 - conduction