Answer:1. Energy 2. Medium 3. Original position 4. Waves 5. Matter
Explanation:
Explanation: C) the air temp. at the top is lower
Answer is: a beaker contains <span>
heterogeneous mixture.
</span>
A heterogeneous mixture<span> have compounds that remain separate in the sample.</span>
Heterogeneous
mixture is not uniform in composition (in this mixture different sand and small pebbles), but proportions of its components (in this
mixture particles of different colors and size) vary throughout
the sample.
Inter-molecular forces. The greater the attraction between particles the more energy required to break the forces or "melt" them.
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As temperature increases, the average kinetic energy of a sample of gas molecules decreases.
