It is easier to start a car engine on a warm day than on a chilly day. Why?

Explanation

To understand why it is easier to start a car engine on a warm day than on a chilly day, we can break down the explanation into several steps:

### Step 1: Understanding Engine Start-Up
When starting a car engine, the battery provides electrical energy to the starter motor, which turns the engine over. The efficiency of this process can be affected by temperature.

### Step 2: Effect of Temperature on Internal Resistance
The internal resistance of a battery is influenced by temperature. On a warm day, the temperature is higher, which generally leads to lower internal resistance in the battery.

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