1. Rain falls from clouds which are in the sky. Clouds are made up of water that has evaporated then condensed into vapor in very small particles, when these particles combine and become heavy enough they will fall as rain.
2. Rainbow occurs from refraction of white light which passes raindrop. Raindrop acts like a prism and bends light into rainbow. So you will see 7 colors consisting of red Orange yellow green blue indigo and violet. (ยากจังข้อนี้ ลองดูนะคะ)
3. It's heavy rain/It's raining hard. I guess it may occur from storm.
4. It's drizzling.
5. It's not raining yet.
8. Do you like to see falling rain?
Water vapor rises into the sky, where the air is colder than below. The cold makes the tiny water drops join together into bigger, heavier drops. The drops aren't invisible now - they've become clouds. When clouds get too full of these big heavy drops, they break apart and fall to the ground as raindrops.