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Q: An experiment measures the growth of crystals in a liquid solution aboard the space shuttle. A collection of bottles has the liquid in varying strength, or concentration of the tested substance.
What would be a control observation in this experiment? A. the bottle with 0% concentration B. the bottle with the weakest concentration C. the bottle with the strongest concentration D. the bottle with the medium amount of concentration
A: A. the bottle with 0% concentration
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User: An experiment measures the growth of crystals in a liquid solution aboard the space shuttle. A collection of bottles has the liquid in varying strength, or concentration of the tested substance. What would be a control observation in this experiment? A. the bottle with 0% concentration B. the bottle with the weakest concentration C. the bottle with the strongest concentration D. the bottle with the medium amount of concentration

Weegy: A. the bottle with 0% concentration
caligun|Points 1291|

User: An experiment wants to find the wind speed that begins to lift an airplane. The strategy is to use a 1/32 scale model and wind tunnel. Why is this strategy valid? A. A wind tunnel is available for the experiment. B. The real airplane will not fit in the wind tunnel. C. The scale model matches the scale of the physical forces in the wind tunnel. D. An inexpensive scale model of the airplane is available through the local hobby shop.

Weegy: C. The scale model matches the scale of the physical forces in the wind tunnel.
may100|Points 2698|

User: An experiment measures the breaking point of identical strips of wood made from different trees. The procedure must contain which of the following instructions? A. performing the experiment outside B. disposing of the broken wood strips C. cleaning up the scattered pieces of wood D. performing the experiment in a safe manner

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Asked 8/22/2013 1:37:20 PM
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