The table below shows the weight in pounds of three animals. | Animal | Ant | Butterfly | Elephant | | :--- | :--- | :--- | :--- | | Weight (lb) | 0.000000661 | 0.00000625 | 9900 | Which of the following represents the weight of the butterfly in scientific notation? 62.5 x 10^-7 lb 625 x 10^-8 lb 0.625 x 10^-5 lb 6.25 x 10^-6 lb
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Scientific notation is a way of expressing numbers that are too big or too small to be conveniently written in decimal form. It is written as the product of a number between 1 and 10 and a power of 10. Show more…
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3. The table below shows the typical mass of eight animals. (6 pts) a. Fill out the table: and then plot and label these values on a log scale. (3 pts) b. If an average American woman (20 years old and up) is 1.85 orders of magnitude lighter than an elephant, what is the weight of an average American woman in kg? (1 pt) c. How many orders of magnitude larger is a blue whale than a hummingbird? (1 pt) d. If a blue whale is 2.5 times larger than a fin whale, how many orders of magnitude larger is the blue whale? (1 pt) Animal | Body mass (kg) | Log(body mass) Blue whale | 192,000 | Elephant | 5,500 | Giraffe | 1,220 | Grizzly Bear | 790 | Dolphin | 260 | Human | 68 | Turkey | 5 | Hummingbird | 0.005 | 10^-3 10^-2 10^-1 10^0 10^1 10^2 10^3 10^4 10^5 10^6 10^7
Jon S.
Challenge Express each answer in scientific notation in the units indicated. a. $\left(1.26 \times 10^{4} \mathrm{kg}\right)+\left(2.5 \times 10^{6} \mathrm{g}\right)$ in kg b. $(7.06 \mathrm{g})+\left(1.2 \times 10^{-4} \mathrm{kg}\right)$ in $\mathrm{kg}$ c. $\left(4.39 \times 10^{5} \mathrm{kg}\right)-\left(2.8 \times 10^{7} \mathrm{g}\right)$ in $\mathrm{kg}$ d. $\left(5.36 \times 10^{-1} \mathrm{kg}\right)-\left(7.40 \times 10^{-2} \mathrm{kg}\right)$ in $\mathrm{g}$
David A.
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