What is photosynthesis?

Photosynthesis is how plants make their food by using the sun.

Light comes from the sun.

WavelengthsWavelengths

Light comes in different Light comes in different wavelengths. We see wavelengths. We see it as colors in the it as colors in the rainbow.rainbow.

We wanted to know how We wanted to know how our plant would our plant would respond to different respond to different wavelengths.wavelengths.

How do plant leaves respond to How do plant leaves respond to different wavelengths?different wavelengths?

MATERIALS Clear laminate sheets. Permanent markers: red, blue,

yellow, green Black construction paper Scotch tape Healthy plant Sunny window

PROCEDURE1. Colored one laminate paper red,

one blue, one yellow, one green.2. Cut red, blue, yellow, green,

clear laminate sheets, and one piece of black construction paper in half lengthwise and then in thirds along width.

3. Placed 2 squares of same color together and taped on three sides to make sleeve.

4. Placed 2 sleeves of each color on leaves.

5. Placed plant in sunny window for one week.

6. At end of week removed sleeves and recorded data.

HYPOTHESISHYPOTHESIS

I thought this was going to happen:I thought this was going to happen:

Clear- most light would get in, no changeClear- most light would get in, no change

Black- none of the light can get in and the leaf Black- none of the light can get in and the leaf diesdies

Yellow- I think the yellow one is going to be Yellow- I think the yellow one is going to be healthyhealthy

Blue – I think the blue one is going to be like the Blue – I think the blue one is going to be like the yellowyellow

Red- I think this one is going to be really healthyRed- I think this one is going to be really healthy

Green – I don’t think its going to be healthyGreen – I don’t think its going to be healthy

RESULTSRESULTSSleeve ColorSleeve Color Leaf # 1Leaf # 1 Leaf # 2Leaf # 2

ClearClear Green, no Green, no changechange

Green, no changeGreen, no change

BlueBlue Green, no Green, no changechange

Green, no changeGreen, no change

GreenGreen Brown spot, Brown spot, no changeno change

Dark green, no Dark green, no changechange

YellowYellow Brown spot, Brown spot, no changeno change

Dark green, no Dark green, no changechange

RedRed Green, no Green, no changechange

Green, no changeGreen, no change

BlackBlack Green, no Green, no changechange

Light green, was Light green, was greener before greener before

CONCLUSIONSCONCLUSIONS

What happened to the leaves with the clear, What happened to the leaves with the clear, blue, and yellow sleeves was as I thought blue, and yellow sleeves was as I thought would happen. With the black sleeve I would happen. With the black sleeve I said the leaf would die. The leaf did not said the leaf would die. The leaf did not die, but it was not as green as before. The die, but it was not as green as before. The data did not support my hypothesis about data did not support my hypothesis about the red and green leaves. Maybe more the red and green leaves. Maybe more time was needed for changes to happen, time was needed for changes to happen, but I conclude that as long as there is but I conclude that as long as there is some light getting to the plant it will live.some light getting to the plant it will live.

REFERENCESREFERENCES

http://www.sciencebuddies.org/mentorhttp://www.sciencebuddies.org/mentoring/project_ideas/PlantBio_p015.shtmling/project_ideas/PlantBio_p015.shtml

Cole, Joanna, The Magic School Bus Cole, Joanna, The Magic School Bus Gets Planted; Scholastic Inc., 1997.Gets Planted; Scholastic Inc., 1997.

Mom- She helped me make sleeves, Mom- She helped me make sleeves, record results, and helped me with record results, and helped me with PowerPoint. PowerPoint.