The water cycle.

1. When the sun   it    (be) out, it   heats   (heat) the water in the oceans.

2. When the sun heats (heat) the water in the oceans, there it (be) vapor.

3. When vapor rises (rise) into the air, it forms (form) clouds.

4. When water droplets in clouds gets (get) too heavy, it rains (rain).

5. When it rains (rain), the water runs (run) off the ground or intos lakes and rivers.