Sienna made a chart listing the steps that describe how a four-stroke heat engine operates. Which best describes Sienna's error?

Compression happens before ignition, so it should be step 2.

Explanation:

Sienna made a chart listing the steps that describe how a four-stroke heat engine operates.

Which best describes Sienna's error?

The descriptions for intake and ignition should be switched with one another.

During compression, temperature does not increase, it decreases.

Compression happens before ignition, so it should be step 2.

The piston moves down, not up, during the exhaust step.

compression happens before ignition so it would be step 2