Freshwater Aquatic Ecosystems worksheet - Free Printable

To solve this matching activity, we need to look at the key features of each picture and match them to the correct freshwater ecosystem name. Here is how we can tell them apart:

1. Stream: Look for small, narrow bodies of flowing water. They often have rocks in the middle and might have small waterfalls or rapids.
* *Picture Match*: The top-left image shows a narrow creek with rocks and falling water. The bottom-middle-right image (fourth from left on the bottom row) also shows a shallow, rocky flow typical of a stream.

2. River: Look for large, wide bodies of flowing water that curve through the land. They are bigger than streams but still clearly moving in one direction.
* *Picture Match*: The top-middle image shows a wide blue river bending through trees. The bottom-middle image (third from left on the bottom row) shows a very wide, turquoise river.

3. Lagoon: Look for a body of calm, often bright blue or green water that looks like it is separated from the ocean by sand or land. It usually looks like a swimming spot.
* *Picture Match*: The top-right image shows beautiful clear turquoise water with a sandy beach area, which is characteristic of a lagoon.

4. Pond: Look for a small, still body of water surrounded by grass or trees. It doesn't look like it's flowing anywhere.
* *Picture Match*: The second image in the top row shows a small, dark pool of water in a grassy yard with a shed nearby. This is a classic pond.

5. Wetlands: Look for areas where the land is saturated with water. You will see lots of tall grasses, reeds, or marsh plants growing directly out of the water or muddy ground.
* *Picture Match*: The fourth image in the top row shows a flat landscape covered in brownish-green marsh grasses. The second image in the bottom row shows similar green marshy islands in the water.

6. Mangrove Swamp: Look for trees with tangled roots that grow directly in the water. These roots often look like arches or sticks sticking out of the mud/water.
* *Picture Match*: The first image in the bottom row shows trees with messy, tangled roots near the water's edge. The last image on the bottom right shows a dense forest with many vertical roots sticking out of the water/mud.

Final Answer:

Here is the correct classification for each picture:

* Stream:
* Top row, 1st picture (narrow creek with waterfall)
* Bottom row, 4th picture (shallow rocky flow)

* River:
* Top row, 3rd picture (wide winding blue river)
* Bottom row, 3rd picture (wide turquoise river)

* Lagoon:
* Top row, 5th picture (clear turquoise water with sand)

* Pond:
* Top row, 2nd picture (small pool in a grassy yard)

* Wetlands:
* Top row, 4th picture (flat marsh with tall grasses)
* Bottom row, 2nd picture (green marshy islands)

* Mangrove Swamp:
* Bottom row, 1st picture (trees with tangled roots at the edge)
* Bottom row, 5th picture (dense forest with roots in the water)