NASA practice

Class contribution

1+2)
Original 
Rocks as big as cars burn up before hitting the Earth but the bigger they are, the higher the possibility of remnants hitting Earth
Yun Jing's Work
Rocks the size of cars disintegrate prior to impacting the Earth but the larger their size, the chance of fragments hitting Earth.
Fine-Tuning/ Final Answer
Gigantic asteroids burn up before impacting the Earth but the larger their size, the higher the chance of fragments hitting Earth (20)

3+4)
Orginal 
Unlike the dinosaurs, humans can predict the coming of asteroids and take precaution by tracing incoming asteroids
Ian's Work
Humans unlike dinosaurs can forsee the incoming of asteroids and prevent it from causing harm.
Fine-Tuning
Humans unlike dinosaurs can foresee the incoming of asteroids and prevent it from causing harm (15)
Final Answer
Unlike the dinosaurs that were destroyed by asteroids, humans can foresee the imminent asteroids and prevent them from causing harm


5)
Original
All planets in the solar system have been in danger for a long time.
-Stay the same- 

6) 
Original

Bigger sized rocks of up to half a kilometre are uncommon but much more disastrous. An explosion can spread torture on a continent 

Keagan's Work

Huge asteroids the size of about half a kilometre are rare but dangerous. The blast can be widespread

Fine-Tuning

Huge asteroids the size of about half a kilometre are rare but hazardous. The blast can be widespread.