Population Density Worksheet B The worksheet is in

Population Density – Worksheet B The worksheet is in 3 sizes.

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Ant Research Different teams of scientists have been monitoring ant populations. To check population density they have sampled different areas. Each diagram represents a different sample, but the scientists have not always used the same scales, symbols or area! Calculate the population density for each sample. A healthy ant colony has a population density of 12 ants per square metre. Which colonies are healthy? Sample E Sample A 1 m 2 m 2 m 1 m Sample D 3 m 1 m = 1 ant 5 m 2 1 m Sample C Sample B 2 m = 1 ant = 8 ants 2 m = 20 ants = 15 ants Sample I Sample F Sample G Sample J Sample H 3 m 3 m 6 m 1 m 50 cm 2 m = 20 ants 5 m 50 cm = 8 ants 2 m = 20 ants 50 cm How would you standardize the sampling process? = 6 ants = 2 ants

= Ant Research Different teams of scientists have been monitoring ant populations. To check population density they have sampled different areas. Each diagram represents a different sample, but the scientists have not always used the same scales, symbols or area! 75 ÷ 10 Calculate the population 2 40 ÷ 4 density for each sample. = 7. 5 per m A healthy ant of 12 ants 2 per square metre. Which 13 ÷ 1 11 colony ÷ 1 has a population density 72 colonies ÷ 6 are healthy? = 10 per m Sample E 13 per m 2 = 11 per m 2 = 12 per m 2 Sample C Sample A Sample B Sample D 1 m 2 m 2 m 1 m 3 m 1 m = 1 ant 5 m 2 1 m 2 m = 1 ant = 8 ants 2 m = 20 ants = 15 ants Sample I Sample F Sample G Sample J Sample H 3 m 3 m 6 m 1 m 50 cm 2 m = 20 ants 5 m 50 cm = 8 ants 2 m = 20 ants 50 cm How would you standardize the sampling process? = 6 ants = 2 ants

= Ant Research Different teams of scientists have been monitoring ant populations. To check population density they have sampled different areas. Each diagram represents a different sample, but the scientists have not always used the same scales, symbols or area! 75 ÷ 10 Calculate the population 2 40 ÷ 4 density for each sample. = 7. 5 per m A healthy ant of 12 ants 2 per square metre. Which 13 ÷ 1 11 colony ÷ 1 has a population density 72 colonies ÷ 6 are healthy? = 10 per m Sample E 13 per m 2 = 11 per m 2 = 12 per m 2 Sample C Sample A Sample B Sample D 1 m 1 m Sample F 5 m 3 m 1 m = 1 ant 180 ÷ 12 = 15 per m 2 2 m 2 m 2 1 m 2 m = 1 ant = 8 ants = 20 ants 90 ÷ 6 = 15 per m 2 90 ÷ 15 = 6 per m 2 Sample G 2 m 15 ÷ 0. 5 = 30 per m 2 = 15 ants 4 ÷ 0. 25 = 16 per m 2 Sample I Sample J Sample H 3 m 3 m 6 m 1 m 50 cm 2 m = 20 ants 5 m 50 cm = 8 ants 2 m = 20 ants 50 cm How would you standardize the sampling process? = 6 ants = 2 ants

Ant Research Different teams of scientists have been monitoring ant populations. To check population density they have sampled different areas. Each diagram represents a different sample, but the scientists have not always used the same scales, symbols or area! Calculate the population density for each sample. A healthy ant colony has a population density of 12 ants per square metre. Which colonies are healthy? Sample E Sample A 1 m 2 m 2 m 1 m Sample D 3 m 1 m = 1 ant 5 m 2 1 m Sample C Sample B 2 m = 1 ant = 8 ants 2 m = 20 ants = 15 ants Sample I Sample F Sample G Sample J Sample H 3 m 3 m 6 m 1 m 50 cm 2 m = 20 ants 5 m 50 cm = 8 ants 2 m = 20 ants 50 cm How would you standardize the sampling process? = 6 ants = 2 ants

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