1. Ornithopters with large rounded leading edges produce lift by leading-edge suction forces . 2. This increased the diameter of the esophagus, creating a suction force . 3. Stagnation at the 660-km discontinuity causes retrograde slab motion due to the suction forces acting at the surface. 4. This stored energy is released with the onset of relaxation similar to a spring uncoiling and results in suction forces . 5. At night, they are active-swimming predators that use a powerful suction force to extract prey from inside holes and crevices. 6. The fluids were obtained by use of a manual breast pump that mimicked the suction force of a nursing infant. 7. At night, it is an active-swimming predator that uses a powerful suction force to extract prey from inside holes and crevices. 8. Its mouth forms a tube when opened, creating a suction force , while its jaws protude forward to secure the prey between sharp teeth. 9. The suction force exerted by the primed bladder on the door is resisted by the adhesion of its flexible bottom against the soft-sealing velum. 10. Immersion of the head is not recommended in spas or hot tubs due to a potential risk of underwater entrapment from the pump suction forces .
