vocab #2

Question 1

Steam engine

Answer 1

A steam powered engine; often burns fuel such as coal or wood to change water into steam in a boiler outside the engine.

Question 2

Piston

Answer 2

A disc shape part that fits tightly inside a cylinder in which some force, such as steam pressure, move it back and forth or up and down

Question 3

Exhaust valve

Answer 3

In a engine, a movable part that controls the amount of steam escaping from a cylinder.