Duplicate of Scientific Method

I will organize snail races on glass and concrete and compare how fast snails travel on each

I will test my partner's pupils by covering one eye and shining a light directly into the other

I will place 4 plants under green lights and 4 under red lights and compare their growth  

Container 1 - Water: 14.0 ml, ice: 14.8 ml  / Container 2 - Water: 20.0 ml, ice: 20.8 ml 

The results showed green light was the least effective color for growing plants

Snails move faster on glass than on concrete 

I will compare the volume of a glass of water at room temperature with a glass of frozen water

After consistent results, I found that the water increases in volume when it freezes.

If snails move faster on smooth surfaces, then a snail will move faster on glass than concrete

Which color lights cause plants to grow more effectively?

If solids are more dense than liquids, then water will decrease in volume when it freezes. 

If plants reflect green light, then they must absorb red light and grow faster under red light

What makes the pupil in the eye change size?

Does the volume of water change when it freezes?

Do snails crawl faster on concrete or glass?