Why does it always thunder and rain in summer?

As rivers, lakes and oceans are exposed to sunlight, water becomes steam. Water vapor rises into small water droplets and finally becomes clouds. The water droplets or ice crystals that make up the cloud are supported by the airflow below, and the rising airflow continuously transports the water vapor below to the cloud. Small water droplets and small ice crystals in the cloud collide with each other in motion, and the volume will increase. The water droplets in the lower layer of the cloud gradually get bigger. After the volume of ice crystals in the upper layer of the cloud increases, they will fall between the water droplets in the lower part of the cloud, and the water droplets will become bigger and bigger. When these water droplets are too big for the updraft to contain them, it will rain.

Why does it thunder?

There are many air currents in the sky, and they are constantly moving. These air currents have some directions.

Run up, some run down, in different directions, at different speeds, some fast, some slow.

Slow down. The movement of airflow makes cumulus in the air move up and down. Friction between clouds makes clouds carry different kinds of charges. Because the same charges repel each other, they are positive and negative.

Charges gather at both ends of the cloud. The faster the air flows, the thicker the clouds, and the more electricity it carries. Cumulus clouds carry electricity.

To some extent, it will neutralize these two charges through air discharge. Because electricity will heat up when it passes through the air, it will make the air empty.

The gas expands rapidly and makes a loud noise. This is a transport mine.

If the charged cumulus is close to the ground, the charge on the ground will be different from that under the cloud due to electrostatic induction.

When the charge reaches a certain level, cumulus clouds will discharge to the ground, which is a ground mine prone to disasters.

Generally speaking, where there are protrusions on the ground, it is easy to discharge from there, so when we are in the wilderness, it will not work.

Take shelter from the rain under the big tree.