Answer:
1. decomposition - D
Step-by-step explanation:
De (the opposite of ) + composition (put together)
The act of separating into basic elements. Example: Laughing gas is produced by the decomposition of ammonium nitrate.
Answer:
2. Heliograph - B
Step-by-step explanation:
Helio (sun) + graph (something written)
A device used for transmitting messages by reflecting sunlight. Example: It is possible to have wireless distant communication with heliograph.
Answer:
3. Vivid - C
Step-by-step explanation:
Full of life = alive; strong; distinct. Examples: Vivid colors; vivid memories.
Answer:
4. Dynamometer - A
Step-by-step explanation:
Dynamo ( generator that converts mechanical rotation into electric power) + meter (used to measure)
An instrument for measuring force energy. Example: The dynamometer was used for the hot start test.