This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Introduction, Floating, Flying and Pressure Power, pp.91-141.

Multiple Choice Questions

1. How does a wedge move an object up an inclined plane?
(a) It lowers the plane so the object slides.
(b) It forces the object to reduce the effects of gravity.
(c) It uses the effect of gravity.
(d) It doesn't ; the wedge moves the plane itself to raise an object.

2. What additional tasks can a boat with two triangular sails do?
(a) Multiply the suction force by three.
(b) Achieve one additional suction force.
(c) Achieve two additional suction forces.
(d) Divide the suction force.

3. How does floating harness the power obtained by squeezing or stretching molecules?
(a) Through the form of upthrust.
(b) By energy "floating" through atomic fields and breaking the bonds to release energy.
(c) By squeezing an atom to split the proton and neutron.
(d) By gathering the individual electrons that are released.

4. What is another type of wedge the author mentions?
(a) The gate latch.
(b) The inversion ring.
(c) The sharp tapered edge of axes.
(d) The caliper.

5. What do compound levers contain?
(a) Two fulcrums and one point of force and load.
(b) A single fulcrum and two points of force and two of load.
(c) No fulcrum but two points of force and two of load.
(d) Two fulcrums and two points of force and two of load.