A radio is an electrical device that receives an invisible signal, or radio wave, from a radio station and converts the signal into sound that we hear and understand. A radio wave is a type of electromagnetic radiation that can be used to convey audio information. Radio waves have energy associated with them. Using a transmitter and an …
Materials and Equipment Advanced Bristlebots Robotics Kit, available from us. You will need the following materials from the kit: Mini breadboard 2xAAA battery holder AAA batteries (2) Mini vibration motors (2) Toggle switch Mini solar cells (2) 1 inch red jumper wire 1 inch black jumper wire You will also need the following materials, not …
While testing out the kite designs kids will learn about how lift and air pressure work together to make things fly! Kites have been constructed and flown for thousands of years. They have been used for fun, for military exercises, and for scientific purposes. You may know that Benjamin Franklin used a kite to show …
How to use engineering design skills to make and build a kite Read More »
Drones can be made out of popsicle sticks Popsicle sticks (2) 6×15 mm DC motors with 1 mm shafts (4). Mini plastic propellers for 1-mm motor shafts (4: 2 CW and 2 CCW) 30 AWG stranded wire Electrical tape 3xAA battery holder with cover and switch AA batteries (3) Drinking straw Scissors Wire strippers Hot glue gun Ruler …
Rooftop gardens Materials Two shoeboxes, photo storage boxes, or half-gallon size cardboard milk cartons. The boxes should be the same size, color, and shape. Sod, available at most nurseries or garden supply stores. Alternatively, a small amount of moist soil, some freshly pulled weeds, and tape may be used. Exacto knife A sunny spot …
This is a modern version of a classic experiment by Jacques Charles (who was also interested in flying balloons). Charles studied the volume of a sample of air—sealed in a glass tube with a U-shaped curve—as he systematically changed the temperature by immersing the tube in a water bath. The air was trapped by a …
Clear plastic drinking straw, preferably a 0.2 inch diameter straw. Metric ruler Fine-tipped permanent marker Clean narrow-necked, small bottle with lid. Travel size bottles like these available from Amazon work well. Washed empty food coloring or vanilla extract bottles work well too. Rubbing alcohol A few drops or red, blue, or green food coloring. Liquid food coloring …
Static electricity is the accumulation of electrical charges on a surface, produced by the contact and separation of dissimilar materials. If you have ever received a shock when touching a doorknob, you have some firsthand experience with static electricity. The sparks created by static electricity can cause real problems, such as when they “fry” an electronic …
Motors that use direct current (DC) voltage are found in many familiar items, such as electric shavers, battery-powered drills, and the fans in laptop computers. DC voltage does not alternate with time. For example, a 9-volt (V) battery has a constant voltage difference between its positive and negative terminals of 9 V. A graph of the voltage at the …
Introduction Electricity powers many of the devices you use every day. Those devices are made up of circuits, ranging from very simple (like in a lamp with a single light bulb) to very complex (like in a computer). Try this project to build your own simple circuit and use it to test which common household …
