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Simple Science Experiments presentation from the USA Science and Engineering Festival.
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Simple Science ExperimentsTry This at Home
Lance Rougeux
Vortex Generator
What do you see inside?
What shape does the air make when it comes out of
the bucket?
Air Cannon Vortex Generator
pumpkinlever
Sandwich bagdartboards
Sandwich bag dart boards
• Materials– Pint or quart-size
plastic bags– Several sharpened
pencils– Water– Sink, pan or bucket
What is happening?
• Most plastics are made of very long molecules called polymers.
• Sandwich bags are made of polyethylene which consists of many polymers forming a web of molecules.
• The molecular web, with all its connections, resists being torn.
saltengineering
Salt engineering
• Materials– Ruler– Cardboard tube– Tissue paper or
wax paper– Rubber bands or
masking tape– Table salt– Broomstick
What is happening?
• The tiny salt crystals transfer most of the force we apply toward the walls of the cardboard cylinder instead of straight down.
• Trusses and beams made for bridges and tall building use similar designs to spread or change the direction of forces and loads.
Take a stab at it
Take a stab at it!
• Materials– Potato– Straw
What is happening?
• The air trapped inside the straw gives the straw enough strength to penetrate the skin of the potato.
• As the straw enters the potato, the potato plug compresses the air inside the straw, increasing the air pressure, and strengthening the straw.
Alka seltzer rockets
Alka Seltzer Rockets
• Materials– Film canister with a
snap-on lid– Water – Alka-Seltzer tablet
What is happening?
• A chemical reaction occurs between the water and the Alka-Seltzer tablet creating carbon dioxide bubbles.
• The CO2 gas builds up pressure inside the film canister until the force is so great that it has to escape.
Non-newtonian fluids
Non-Newtonian fluids
Non-Newtonian fluids
• Materials– Corn starch– Water– Pan
Simple Science ExperimentsTry This at Home
Lance Rougeux