Dec. 02, 2011
Stab a potato!
by Lynn Brunelle
In this Tabletop Science video, see how you can use the power of air pressure to stab a potato with an ordinary drinking straw.
Feb. 25, 2011
Water and Ice
by Lynn Brunelle
Icebergs are huge floating islands of ice that float in the ocean. When you see an iceberg you are only seeing about 10% of the whole thing. The rest of the iceberg is floating below the surface of the water. How is that possible? Water is weird. Unlike most liquids, it expands when it freezes. Because of this expansion, ice floats in water. You can see the expansion with this experiment.
Jan. 06, 2011
Water Slosh Swing
by Lynn Brunelle
Ever been to the beach one day and the water level is way high up on the sand? Then come back the next day to see that the water is way down on the beach? Where did all that water go? In this Tabletop Science video, Lynne Brunelle talks about tides and shares a water swing activity you can try at home.
Dec. 09, 2010
Tabletop Science: Leaf Chromatography Experiment
by Lynn Brunelle
In this Tabletop Science video, Lynn Brunelle explains why leaves change color in the fall. Then she demonstrates a cool, family-friendly chromatography experiment that shows how you can see the hidden colors lurking in leaves.
Jun. 17, 2010
Water Cycle
by Lynn Brunelle
It’s that time of year when some days are beaming with sunshine one minute and the next there’s a big black cloud dropping rain overhead. So what’s that all about? The water cycle. It’s all about the water cycle. Check these experiments out. You can make a cloud and make it rain right in your own kitchen. Why does it rain? You can make it rain right in your own kitchen and see for yourself.
May. 26, 2010
Sound! It's in the Air
by Lynn Brunelle
Did you know that every time you make a sound you’re causing a major collision? Yup. Every sound you make or hear is an actual chain reaction of vibrating molecules crashing into each other until they bump into the tiny hairs and bones and membranes inside your ear. It’s sound. And it’s very dramatic. In this experiment, you can see the vibrations that you’re making every time you make a noise. Here’s how.
Apr. 02, 2010
Let It Snow, Indoors!
by Lynn Brunelle
Are you aching for snow with no chance of it in sight? Why not dabble in chemistry and make some beautiful crystals of your own? With stuff you already have around the house, you can whip up a batch of your own crystal snowflakes. They’re fun to make and they make really cool gifts. Crystals are solids made up of molecules that line up in specific repeating patterns. Different kinds of crystals have different patterns and different shapes. Snowflakes are ice crystals and they always have six sides. Salt crystals are always cube-shaped. Borax is a crystal, too.
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