100 Award-winning Science Fair Projects |
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Results 1-3 of 19
Page 107
... screw and attach all the pieces together . Repeat this procedure for the 44 - inch ( 110 - cm ) pendulum . 9. Take the 44 - inch ( 110 - cm ) pendulum and measure 11⁄2 inch ( 3.75 cm ) from the top wing - nut Screw yardstick binder ...
... screw and attach all the pieces together . Repeat this procedure for the 44 - inch ( 110 - cm ) pendulum . 9. Take the 44 - inch ( 110 - cm ) pendulum and measure 11⁄2 inch ( 3.75 cm ) from the top wing - nut Screw yardstick binder ...
Page 133
... screw , drill a hole and partially insert a 14 - inch screw . Make sure the hole is large enough to coun- tersink the screw . 13. Cut a 21⁄2 - inch ( 6.2 - cm ) piece of string . Tie one end to the other 5 / 16 - inch washer and the ...
... screw , drill a hole and partially insert a 14 - inch screw . Make sure the hole is large enough to coun- tersink the screw . 13. Cut a 21⁄2 - inch ( 6.2 - cm ) piece of string . Tie one end to the other 5 / 16 - inch washer and the ...
Page 143
... screws . Make sure the eye screw sits at the center of the base . 3. Attach the post to the base in the same way . Make sure the eye screw on the post lines up with the eye screw on the shield . 4. Use the remaining 3 - inch ( 7.5 - cm ) ...
... screws . Make sure the eye screw sits at the center of the base . 3. Attach the post to the base in the same way . Make sure the eye screw on the post lines up with the eye screw on the shield . 4. Use the remaining 3 - inch ( 7.5 - cm ) ...
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allow angle Attach ball birefringent bottle bucket cardboard carefully cellophane circle clay color compass contour line Craft knife create cubic dial diameter drawing Drill dune Earth Earth-to-Sun Distance edge electrical electrophorus Explanation Felt-tip marking pen foam board glass glue hanger hole inches inferior planets Leyden jar light liquid magnet Masking tape Measure Mercator projection metal meter methyl salicylate microphyle mirrors molds Moon move nail Need needle paper clip pencil pendulum Phenakistoscope philodendron phonograph photographs piece Place plant plaster plastic Pluto plywood polarized poster board potato Procedure protractor Quakemaster Record your observations refractive index Repeat step Result rotate rubber bands ruler salt sand scientists screen screw seeds side soap soil spoon square star star clock station stereoscopic string strip Stroboscopic Styrofoam sugar surface teaspoon test tube tracing waves wooden dowel yardstick