Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted.
Question 2
2.
Susan said, “If I fertilize my geranium plants, they will blossom.”
Question 3
3.
Jonathan’s data showed that household cockroaches moved away from raw cucumber slices.
Question 4
4.
Rene grew bacteria from the mouth on special plates in the laboratory. She placed drops of different mouthwashes on bacteria on each plate. Then she measured the growth.
Question 5
5.
Jose saw bats catching insects after dark. He asked, “How do bats find the insects in the dark?”
Question 6
6.
Justin wondered if dyes could be taken out of plant leaves, flowers, and stems.
Question 7
7.
Alice soaked six different kinds of seeds in water for 24 hours. Then she planted the seeds in soil at a depth of I cm. She used the same amount of water, light, and heat for each kind of seed.
Question 8
8.
Bob read about growing plants in water. He wanted to know how plants could grow without soil.
Question 9
9.
Kevin said, “If I grow five seedlings in red light, I think the plants will grow faster than the five plants grown in white light.”
Question 10
10.
Angela’s experiment proved that earthworms move away from light.
Question 11
11.
Michael fed different diets to three groups of guinea pigs. His experiment showed that guinea pigs need vitamin C and protein in their diets.
Question 12
12.
Kim’s experiment showed that chicken eggshells were stronger when she gave the hen feed, to which extra calcium had been added.
Question 13
13.
Andre noticed that fruit sitting on the counter went rotten more quickly than fruit in the refrigerator.
