Unit: Plants

Matthayomsuksa 1

Topic: How plants drink water

Objective

1. To know how to conduct an experiment, observe closely what is happening and keep appropriate records.

2. To understand what plants require grow and staying healthy?

3. To learn that plants need water to stay healthy.

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What do you see in the video?

How do plants drink?

Vocabulary

stem

flower

root

Activity

You will need

3 white roses

Red and blue food coloring

4 contain

ers holding water

Steps of Experiment

1. Give each group an experimental recording sheet.

3. Pour the water mixing the coloring food into the 4 plastic cups: each of plastic cups will have colored water. The first 2 plastic cups will have blue water. The other 2 plastic cups will have red water.

2. Put the plastic cup on the table.

4. Put a rose into a plastic cup containing water mentioned earlier.

5. - The first rose will be in blue water. - The second one will be in red water. - And the last one will be in both blue and red water.

Conclusion

Flowers drink water with a capillary action. Capillary action happens when water molecules are more attracted to the surface they travel along than to each other. In paper towels, the molecules move along tiny fibers. In plants, they move through narrow tubes that are actually called capillaries. Plants couldn't survive without capillaries because they use the water to make their food