determining population size
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Two ecologists fred and George travel to South America to study the Piranha population in a 100 mile section of the Amazon River. Fred's first attempt is to count all the piranha individually in the 100 mile section. What method of study is he using? | Direct observation
🗑
|
||||
| Fred quickly realizes that catching piranha is not only impractical and dangerous. He does some research and discovers that prianha are territorial and lie in schools. Each school usually contains about 50-100 fish and inhabit an area of 3square miles. | indirect observation
🗑
|
||||
| George thinks that Fred is a wimp and decides to map out a one square mile of the river and proceeds to catch and count 35 piranha. He uses this information to calculate the population of piranha in 100 miles. | Sampling
🗑
|
||||
| The native Brazilian who brought the ecologist up the river thinks they are both nuts because they are using the wrong type of fishing pole and nets. He shows them how to catch and mark them for further study. | mark and recapture
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
hgkaduson
Popular Science sets