- from The truth about science curriculum text-
INTRODUCTION
plant growth on north and south facing hills
the sun affects a lot of things. it can affect the amount of time you stay outside and it can affect the growth of plants as well. If there were a situation where one type of plant life got more sunlight than another, the group with the more sunlight is most likely to grow faster and be more abundant. The question we are trying to answer is: what is the difference in vegetation on a north and south facing slopes? our hypothesis is that there will be a difference in vegetation on north and south facing slopes.
-chad, Allison, James, willy
methods
materials
-two identical containers per experiment
- regular dirt (to fill the containers at least 3/4 full)
- 6 earthworms per experiment
- masking tape
- spoons
- extra bucket
- pencil
- measuring cups
- water
- metric rulers
procedures
1. label the containers (wet/dry, hot/cold, or dark/light)
2. make centimeter tape rulers with the masking tape and place on outside of the containers.
3. fill each container 3/4 full with dirt.
4. add2 tsp to each container. (add two more tsp. of water to the "wet" container if doing the wet/dry experiment)
5. put three earthworms on top of dirt in each container.
6. set containers in treatment locations.
7. wait 23 hours.
8. record the depth of the dirt.
9. remove the dirt 1cm at a time, checking for worms.
10. record the depth of each worm located.
results
|
A |
B |
C |
|
|
1 |
Coniferous Trees | Deciduous Trees | |
|
2 |
Location 1 | 12 | 55 |
|
3 |
Location 2 | 7 | 27 |
|
4 |
Location 3 | 10 | 34 |
discussion
1. research question: do more invertebrates live in stream or pond muck?
discussion:
there were many more invertebrates in the pond muck than there were in the stream . we think the reason that that's true is because the stream muck is just sand, whereas the pond's muck is very rich with nutrients and there's lots of other life for them to live on with, and in. the lower the water was, the more invertebrates we found in the pond we think that we found more invertebrates when the water was shallower because maybe they like thicker muck and the muck is thicker without as much water.