Soil, Water, and PlantsScientific Investigation Process

By PresenterMedia.com

Wheel of Scientific Investigation

Step 1: Make Observations

Sample bags contain:• Rocks/Gravel• Clay• Sand• Topsoil

Record your observations about the soil samples in your response journals.

Use your curiosity and

senses to learn.

Set up your journal to

record your observations for

each sample bag.

Step 2: Ask QuestionsI Wonder if…

Topsoil

Rocks/Gravel Clay Sand

Be prepared to share

some of the your

questions.

•What is that one question we want answered?

•What do we already know about our question?

Where can we find the answers to our question?

Step 3: Learn MoreHow can we find the answers to our questions?

•Rank your soil samples from “least absorbent” to “most absorbent.”

•Now state your hypothesis…”We predict that the order of soil samples from least absorbent to most absorbent will be…

Step 4: Design the Experiment HypothesisConduct an experiment to determine how much water different

types of soil can absorb.

Step 4: Conduct the Experiment StepsRecord the steps of the experiment in your response journal so that you are consistent

with each sample bag. Follow the exact steps for the remaining soil samples.

Place the filter paper over the top of the jar. Make a shallow dent in the middle to hold the soil. Secure with a rubber band.

Fill the dent with some of the soil sample.

Carefully measure ¼ cup of water and slow pour evenly over the soil sample.

Designate one group member to watch the inside of the jar while the water is being poured.

Record observations:• What happens when the

water is poured?• What does the sample

look, feel, and smell like after the water has been poured?

Remove the filter paper and pour the water in the jar into the measuring cup. How much of the ¼ cup of water is left?

Step 4: Conduct the Experiment Record DataRecord observations with great detail.

Soil Samples Rocks & Gravel

Clay Sand Topsoil

What happened when the water was poured?What did the sample look like after the water was poured?What did the sample feel like after the water was poured?What did the sample smell like after the water was poured?

Reading SelectionWhy do you think the ability of soil to absorb water might be important?

What do plants need to grow?

Plants can never have too much water? True or False?

Based on your experiment, which type of soil do you think would be best for plants? Why?

Step 5: Create MeaningConnect your observations, reading selection, and the class discussion in order to gain meaning.

What do we know about soil?

What is different about these types of soil?

What is hummus and explain its role in plant development?

Do all plants need the same amount of water? Why?

Explain the scientific investigation process and your groups’ findings.

Observe

Question

Learn More

Design/Conduct Experime

nt

Create Meaning

Tell Others

Step 6: Tell Others What Was Found