Star Gazing ~

On September 27, 2012 Mr.Chung invited us using  telescopes to gaze star!

I was shocked when I see the real star instead of  the images from internet! One of the star I saw was 6000 light years far away from earth!

Here is the picture I took from that night ! Amazing picture!

It was a wonderful night and experience~  Thanks for Mr.Chung~

Hot Air Balloon(2)

we used tissue paper and wires to make the air balloon

Here are our lovely group members~

Basiclly, the structure of our hot air ballon is based on the chinese sky lantern, it's a cylinder shape that is more stable.

We use tissue paper  because it's light and it would be easy to fly, but we forget the weight of wires..........TAT

unfortunate our balloon failed .........but it still kept in a good shape! I believe it was the best looking of all designs~

 I dont know why they made a hole there......it lose hot air...that's one reason for it's uncessceful.

 We put the candles at the bottom of the balloon, the hot air would go up and fly the balloon.

See!

 

 

 

Improvement: the biggest problem is the weight of the balloon, it was too heavy. We should make it lighter, and the candles were not enough~

Hot Air Balloon(1)

This is our fire balloon！！！、

It failed........but i love it!

My analysis of this failure:
the plastic bag was too heavy and the candles could not produce enough heat to heat up air inside the bag, and the outside temperature is cold.

Improvement:

make the bag not too heavy, change the material to make it lighter.

may change the structure