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" as it refers to the process of providing energy to move a molecule to a higher - energy state.
• "The continual movement of molecules that occurs when heat accelerates atoms" is "atomic motion" since heat causes atoms (and thus molecules) to move more vigorously.
• "Creates the radio wave signals used in radar and microwave ovens" is "magnetron" as magnetrons are devices that generate such radio - wave signals.
• "The smallest particle; made up of one or more atoms" is "molecules" by definition.
• "Uses a transmitter to emit radio waves called microwaves" is "radar" as radar systems use transmitters to send out microwave - like radio waves for detection purposes.
• "Converts high voltage electricity into very short waves of energy" is "magnetron tubes" which are components that perform this energy - conversion function.
• "Energy that travels outward in straight lines" is "radiation" as radiation (e.g., electromagnetic radiation) travels in straight - line paths.
• "Current or field used to convey data from one place to another" is "radio wave signal" as radio waves (in the form of signals) are used for data transmission.
• "Very short waves of electromagnetic energy" is "microwave energy" as microwaves are a type of short - wavelength electromagnetic energy.
• "Flow of thermal energy through a substance" is "conduction" which is the process of heat transfer through a substance.

Answer:

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