Science Fair Ideas for 7th Grade
This video is about science fair ideas for 7th grade. This project is called “Tornado in a Box”. By watching this video, you will see how to make a small tornado inside a small chamber.
Materials Required: –
- Cardboard
- Plastic wrap
- Duct tape
- Plate
- Water
- Dry ice
- Tongs
- Small 12 volt fan
Procedure: –
- Using the cardboard cut the four sides of the chamber.
- Cut a 3.4” wide slit in each side. This slit should be 2” up from the bottom.
- Cut windows in two adjacent sides.
- Secure the sides together by using duct tape.
- Cover the windows with the plastic wrap.
- On the upper side, set the fan and make a cardboard chimney here.
Making the vortex visible: –
- Take the plate and put the dry ice in it. Make sure to use tongs while handling dry ice otherwise it can cause skin burns.
- Place the plate inside the box.
- Pour some warm water on the dry ice. It will produce a good amount of smoke.
- Turn the fan on. You will see a visible tornado.