Jawaban:

7. Noun phrases in the text:

- Tornadoes

- Warm and moist environments

- Thunderstorms

- Sun

- Column of air

- Heights

- Ground

- Funnel

- Ice skater

- Scientists

- Funnel clouds

8. Two complex sentences in the text:

- "The longer the sun heats the ground, the greater the chance a tornado can form and the larger it may become." (compound-complex sentence)

- "Sometimes, the funnel will reach the ground and become a tornado." (complex sentence)

9. Technical terms in the text:

- Tornadoes

- Thunderstorms

- Column of air

- Funnel

- Funnel clouds

10. Yes, there is a passive voice in the text:

- "Sometimes, this column of air is pulled upwards." (passive voice without the doer mentioned)