1. Water glider Name:Adam Remeš Class:VIII.A

2. Requirements PET bottle (1,5l) PET bottle (1,5l) 2 PET bottles (0,5l) 2 PET bottles (0,5l) Eletric engine Eletric engine Battery (4,5V) Battery (4,5V) Lever Lever Propeller Propeller Wires Wires

3. Design In a large bottle we cut a hole to place the little engine. In a large bottle we cut a hole to place the little engine. Fix the propeller and eletric engine connect to the battery switch stuck in the PET bottle Fix the propeller and eletric engine connect to the battery switch stuck in the PET bottle The large bottle is mounted to the side 2 small PET bottles. The large bottle is mounted to the side 2 small PET bottles. Using the standard markers, ballpoint pen... Using the standard markers, ballpoint pen... Lay the glider on the surface of the water tank and turn on the switch. Lay the glider on the surface of the water tank and turn on the switch. The glider moves on the surface The glider moves on the surface

4. Physical explanation The glider is moving with the assistance of a propeller. The glider is moving with the assistance of a propeller. The propeller is driven by engine. The propeller is driven by engine. The spinning propeller pushes air which is moving the glider. The spinning propeller pushes air which is moving the glider.

5. (water) Two small bottles One big bottle Propeller Battery Wires