A campfire is made from sticks and logs. Why do the sticks ignite before the logs?

Sticks ignite before logs because they are smaller and have a higher surface area-to-volume ratio, allowing them to heat up more quickly and catch fire more easily. Additionally, sticks typically contain less moisture than larger logs, making them more flammable. The smaller size also means they require less energy to reach their ignition temperature, resulting in faster combustion.