This DIY snowball catapult is an excellent way to teach basic engineering concepts while having a blast launching cotton balls across the ... Place the plastic spoon onto one of the popsicle ...

Background A catapult works because energy can ... Try this activity to find out! Plastic bottle cap to hold a cotton ball Cotton ball (If you do not have any available, you can make a small ...

George Giavasis, who lives in Northwest Montana, created a tennis-ball catapult for his dog Olive to play fetch with. Sharing his invention online, Giavasis posted a video of the catapult on the ...

A custom-built catapult is offering cheetahs at Oregon ... The device is a hand-cranked machine that launches plastic balls up to 150ft (46m) into the cheetah habitat, allowing Darlene and Mary ...

The catapult mechanism, also known as a lever, was, and still is, used to lift and move objects. If you have ever tossed a ball or played on a seesaw you have experienced the power of a lever.