||We know that seeds get their food from the sun and make a kind of sugar for food. Their roots are used to pull the water from the soil or whatever it is growing on.
||How does the amount of water affect how fast the seeds germinate? We all thought about what seeds need to germinate and wanted to change one of those variables. We chose water because that would be the easiest one to change and control the amount to use.
||If we add a small amount of water to a seed and then add a larger amount of water to a different seed then the seed with more water will germinate quicker.
||1) Put a paper towel into a petri dish 2) Put 4 pea seeds and 4 Alfalfa seeds into a petri dish and put 1/4 tsp. of water in it 3) Then do steps 1 and 2 again bit instead of 1/4 put 1/2 tsp. of water in the dish 4) Next do step 3 again but with 1/2 tbs. of water 5) Do step 3 again with 1 tbs. of water 6) Finally Record all of the Data for all of the seeds.
||You can not put to much water but you can not put to little so right in the middle was the best which is around 1/2 tbs. and 1 tsp.
For the radishes the highest measurement for 1 tbs was 30mm. For the 1/4 tsp. the highest was 36mm. Next, was the 1/2 tbs. which was 84mm. Finally, 1 tsp. which was 121.25mm. For the peas, the highest growth for the 1 tbs. was 18mm. 1 tsp. was 26mm. And then the 1/4 did not grow at all. Finally, 1/2 tbs grew 68mm.
For the peas when it was in 1/4tsp. there was not enough water for the shell to soften fast enough, for the radishes there was just enough water. For 1tbs. for the peas and the radishes as soon as they sprouted they started drowning in the water because there was so much. For 1 tsp. and 1/2 tbs. There was enough water for the shell to break through but not to much water that they drownded as soon as they sprouted.
||Middle School Students (grades 6,7,8)
||DeWitt Middle School