Dancing Popcorn

Materials:

• water
• plastic cup
• popcorn
• 1 teaspoon
• 1 tablespoon
• Sodium Bicarbonate
• vinegar

What to do:

1. Fill the plastic cup with water until it is ¾ full.
2. Measure half a teaspoon of sodium bicarbonate.
3. Add the Sodium Bicarbonate to the water and stir until it has dissolved.
4. Add 4 kernels of popcorn to the cup.
5. Add 1 tablespoon of vinegar to the cup.
6. Watch closely for at least 2 minutes.



I predict that the kernels will sink but bubbles will be created because of the vinegar and the sodium bicarbonate. The bubbles attach themselves to the kernels and they will float up. Then the bubbles pop and the kernels sink, then they rise, then they sink.

What actually happened was the kernels sank at first but the bubbles were created because of the vinegar and the sodium bicarbonate, then the kernels went up and down.

Rocket Science

Rocket Tea Bags

Materials:

1 tea bag

Matches

Adult Supervision

Let’s do it:

1. Remove the string and tag from the tea bag.

2. Undo and remove the staple and then empty out the leaves.

3. Make the tea bag material into more of a tube by putting your finger into it. Careful not to tear the material!

4. Stand the tube vertically on a flat dry surface, open end facing upwards.

5. Ignite the rocket by lighting the top end of the tea bag tube and stand back!

I predict that the tea bag will rise up because the air inside the tea bag is warm because of the fire and the air on the outside is cold. The warm air rises and lifts the tea bag like a hot air balloon.

What happened was we launched two rockets and the tea bags rose up because the air inside the tea bags was warm because of the fire and the air on the outside is cold. The warm air rises and lifts the tea bag like a hot air balloon.