Sampling Techniques Environmental

What is a square called that we use to sample populations?

• grid

• quadrat

• cube

• quarter

What type of population would you ESTIMATE using a quadrat?

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Tags

NGSS.MS-LS2-1

Limpets were found in 25 out of 50 quadrats. What percentage of quadrats contained limpets?

• 100%

• 25%

• 50%

• 75%

These four 1m² squared quadrats were place in a 8m² garden. Estimate the total population of flowers in the whole garden.

• 16

• 17

• 8

• 40

• 20

Tags

NGSS.MS-LS2-1

Which organism can be measured with a quadrat?

• lion

• flies

• rat

• dandelion plants

• fish

This 1m² squared quadrat was place in a 3m² beach. Estimate the total population of crabs in the whole beach.

• 15

• 12

• 18

• 6

• 5

Tags

NGSS.MS-LS2-1

These are used to study the distribution of organisms

• microscopes

• transects

• measuring cylinders

• quadrats

Why do scientists use sampling techniques to gather population data rather than counting everything?

• scientists are lazy

• sampling is more efficient and achievable

• sampling is more accurate

• scientists prefer estimations

• sampling is cheaper

Tn 1m² quadrats were placed in a 40m² field. On average 2 snails were found in every quadrat. Estimate the population size of the whole field.

• 2

• 10

• 40

• 80

• 20

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is random-sampling used for?

• Vegetation

• Animals

• People

• Bacteria