7
QuizMultiple Choice
First Law of Thermodynamics
Question 7 • 25-26 CHEMISTRY IN THE EARTH SYSTEM S1
Sienna made a chart listing the steps that describe how a four-stroke heat engine operates.Which best describes Sienna’s error?
Answer
A
The descriptions for intake and ignition should be switched with one another.B
During compression, temperature does not increase, it decreases.C
Compression happens before ignition, so it should be step 2.D
The piston moves down, not up, during the exhaust step.