What is a great science fair experiment for a seventh grader?

Question

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Answer 1

Set up an experiment to find out:

1. Does yeast produce more carbon dioxide from apple juice or other fruit juices?
2. Do grass seeds need darkness in order to sprout?
3. Do onion bulbs (the little onion sets like you plant in the garden) grow upward if you plant them upside down?

Answer 2

I recommend a Soda can generator. decrease with scissors the tops off of three soda cans. it rather is generally performed accurately by skill of piercing the can with a knife and taking scissors to decrease the real off. decrease length clever to backside and a million/2 way around leaving the backside cup. it fairly is going to look like a legless chair. Mount the cans with taped on chop sticks. Stick the sticks right into a Styrofoam ball at 60 degree periods. Shove a pencil interior the direction of the ball at ninety ranges interior the vertical. carry mutually 3 ring magnets and a 2 clutter pop bottle and a few copper twine. With a warm nail soften a hollow interior the plastic cap of the bottle the dimensions of the pencil diameter. decrease a side hollow interior the bottle sufficiently vast to artwork your palms in. Glue one magnet to the real of the cap and the different to the backside of the Styrofoam ball so as that the magnets are in opposition. The ball could desire to flow on the magnet it rather is on the cap. attain into the hollow decrease interior the side of the bottle and place the 0.33 magnet on the backside of the pencil end. Take the twine and sort a spool with the midsection sufficiently vast to circle the magnet. Take the ends of the twine and pierce the plastic bottle and thread the twine so as that it helps the coil and run it back into the bottle to a flash lite bulb. place a weight interior the backside of the bottle for stability. show with a fan that makes adequate wind to instruct the cups (Soda Cans).

Answer 3

Ok, a good 7th grade science project? Hmm, you could do a survey to find out whether people like to read or not, and another one asking the same people what genre of books they like to read, and see if there is a correlation between the two. Hope this helps!