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A group of students simulates colliding air masses. Using an index card for separation, a jar of warm tap water with red food coloring is placed over a jar of cold water with yellow food coloring. The index card that separates the two bodies of water is removed. Students observe how the two fronts travel in relation to one another.
A.) Air masses are not distinguisable by color.
B.) Air masses are neither hot nor cold in temperature
C.) Air masses do not collide in real life
D.) Air masses cannot be modeled
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Avariable that is not being directly tested during an experiment should be changed varied experimented controlled
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Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
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