Draw or describe a scientific model using at least five steps.
What will be an ideal response?
Problem - Learn what is known - question - experiment - data - analysis - form hypothesis - test hypothesis - evaluate hypothesis - generate theory - model.Any combination of five steps in the correct order (it is acceptable to skip steps).
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A frontier, in contrast to a boundary,
A) separates two states. B) is an area rather than a line. C) has become a more common means to separate states. D) is a region of ethnic conflict. E) All of the above.
Areas on the outskirts of cities where people build shacks from corrugated metal, hunks of plastic, scrap wood, cardboard, and other scavenged building materials, or live in rusted shipping containers and junked cars, are called ____.
A. suburbs B. sprawls C. exurbs D. urban heat islands E. shantytowns
Sodium sulfite, Na2SO3(aq), is added to wine as an antioxidant since it reacts with the oxygen of the air to form sodium sulfate, Na2SO4(aq). Which of the following is the balanced equation for this reaction?
A) Na2SO3(aq) + O(g) ? Na2SO4(aq) B) Na2SO3(aq) + 2 O(g) ? Na2SO4(aq) C) 2 Na2SO3(aq) + O2(g) ? 2 Na2SO4(aq) D) Na2SO3(aq) + O2(g) ? Na2SO4(aq)
Where do stream channels experience the most erosion?
A. On the inside of a bend where the velocity is higher B. On the outside of a bend where the velocity is higher C. On the outside of a bend where the velocity is lower D. On the inside of a bend where velocity is lower