Testable question:Testable question:Will a radish plant grow towards a magnet?Will a radish plant grow towards a magnet?Hypothesis:Hypothesis:If we put a magnet next to a radish plant the radish If we put a magnet next to a radish plant the radish

will grow towards the magnet because we think will grow towards the magnet because we think since a radish grows shorter next to a magnet since a radish grows shorter next to a magnet then it will grow towards a magnet too.then it will grow towards a magnet too.

Background Information:Background Information:-Radishes grow shorter next to magnets-Radishes grow shorter next to magnets-Magnetism is the force that electric currents exert -Magnetism is the force that electric currents exert

on other electric currentson other electric currents

Experimental Variables:Experimental Variables: One of the radishes will have a magnet One of the radishes will have a magnet

next to it, and the other wontnext to it, and the other wont Control Variables:Control Variables: Same temperature, amount of water, pots, Same temperature, amount of water, pots,

amount of sunlight, radish seeds, and soil.amount of sunlight, radish seeds, and soil.

6 radish seeds in 6 radish seeds in each poteach pot

1 magnet that holds 1 magnet that holds 100 pounds100 pounds

2 pots2 pots 800 milliliters of soil in 800 milliliters of soil in

each poteach pot 1 2-foot piece of rebar1 2-foot piece of rebar 2 feet of duct tape 2 feet of duct tape

Gather all materials: 2 pots, 1 magnet, 1 pack of Gather all materials: 2 pots, 1 magnet, 1 pack of radish seeds, 1 piece of rebar, duct tape, and radish seeds, 1 piece of rebar, duct tape, and soilsoil

Put 800 milliliters of soil in each potPut 800 milliliters of soil in each pot Put 6 radish seeds ½ of an inch down in the soilPut 6 radish seeds ½ of an inch down in the soil Get the piece of rebar and duct tape the magnet Get the piece of rebar and duct tape the magnet

to the rebar. Then put the piece of rebar in the to the rebar. Then put the piece of rebar in the soil so the magnet is facing the radish.soil so the magnet is facing the radish.

Water every other day.Water every other day. As it grows, if the radish grows towards the As it grows, if the radish grows towards the

magnet, record how much every week.magnet, record how much every week.

DateDate MagnetMagnet No MagnetNo Magnet

11/1211/12 1 cm. Sprout1 cm. Sprout No SproutNo Sprout

11/1411/14 2 cm. tall2 cm. tall 1 cm. Sprout1 cm. Sprout

11/2211/22 Growing Growing straight up 3cmstraight up 3cm

Growing Growing straight up 2 cmstraight up 2 cm

11/2911/29 Growing Growing straight up 5 cmstraight up 5 cm

Growing Growing straight up 4 cmstraight up 4 cm

0

1

2

3

4

5

6

Obs

erva

tion

1

Obs

erva

tion

2

Obs

erva

tion

3

Obs

erva

tion

4

Magnet

No Magnet

The plant with the magnet ended up not growing towards the magnet, but it did grow 1 cm. taller than the plant without the magnet.Compare: Both plants grew straight up; Both plants looked the sameContrast: The plant with the magnet grew 1 cm. taller than the plant without the whole timeThe radish plant with the magnet grew 1 cm. taller than the radish without the whole time.

Our hypothesis was incorrect because the radish Our hypothesis was incorrect because the radish plant with the magnet grew straight up plant with the magnet grew straight up

The rebar that was holding the magnet up was The rebar that was holding the magnet up was metal, so it might have affected the magnetic metal, so it might have affected the magnetic fieldfield

Instead of using a piece of rebar we would use a Instead of using a piece of rebar we would use a wooden stickwooden stick

Our recommendations are that magnets don’t Our recommendations are that magnets don’t have any affect on plantshave any affect on plants

Radish pictureRadish picture ““Radish”.11/29/2010.theora.com/images/Radish”.11/29/2010.theora.com/images/

radish.jpgradish.jpg Magnet pictureMagnet picture ““NibMagnet”.11/29/2010.www.thomasnet.com/NibMagnet”.11/29/2010.www.thomasnet.com/

…/nib-magnet.JPG…/nib-magnet.JPG Project IdeaProject Idea DoMagnetsAffectRadishPlantGrowth?.11/30/201DoMagnetsAffectRadishPlantGrowth?.11/30/201

0.//www.free-science-fair-project.com/Free-0.//www.free-science-fair-project.com/Free-Science-Fair-Project.aspx?ProjectID=7&Title= Science-Fair-Project.aspx?ProjectID=7&Title= DoMagnetsAffectRadishPlantGrowth?.DoMagnetsAffectRadishPlantGrowth?.

Magnet informationMagnet information Schwartz, Brian B., and Richard B. Schwartz, Brian B., and Richard B.

Frankel. "Magnetism." Frankel. "Magnetism." World Book World Book AdvancedAdvanced. World Book, 2010. Web.  30 . World Book, 2010. Web.  30 Nov. 2010. Nov. 2010.

Thanks to…Thanks to… Julie CiaJulie Cia Julie RabinJulie Rabin Mr.PhamMr.Pham