Scientific Methods Answers

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An investigation involves determining which metal is better for making pots that will cook food faster. Which is the best hypothesis to use for this investigation?

Copper is better than iron for making pots.

Copper is more malleable and heats up faster than iron.

If copper is a better conductor, it will heat up faster than iron.

If copper heats up faster than iron, it is better for making pots.

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During a conference presentation, a scientist described the materials that she used and how she performed her experiments. Which best explains why a scientist would share these details in a conference?

It tells the audience if the results support or contradict the hypothesis.

It tells the peers if the study is supported by mathematical models.

It informs the peers if the results are supported by other scientists.

It informs the audience if the study included controlled tests.

Which is an example of making a qualitative observation?

measuring the speed of the chemical reaction

describing how copper changes color in chlorine

recording how long it takes to burn magnesium

showing the results of an experiment with a graph

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