Question

I. Answer the following questions. (3)

a) How does a row boat move?

b) How does a motor boat move?

c) What do we need to move a sail boat?​

Answer 1

Answer:

a) Rowing is the act of propelling a boat using the motion of oars in the water by displacing water to propel the boat forward.

b) The crankshaft turns the main driveshaft running down the long spine of the motor. A small gearbox at the bottom of the driveshaft converts vertical spinning motion into horizontal spinning motion. The propeller powered by horizontally spinning gears powers the boat through the water.

c)The sail creates a low pressure zone in front of the sail and a high pressure zone behind the sail. The boat moves into the low pressure zone and is sucked forward. ... With the sails being unable to push the boat sideways or onto its side, the sails drive the boat forward.

Answer 2

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