專題題目( phy ) (10點)

Free falling arr .........
suggest one way to make the paper hypothesis turns more rounds during free falling? Try to design a scientific investigation to test your idea. You can follow the questions below to construct the investigation.

-What is the variable to be changed?

-What are the variables to be kept constant?

-What is the result to be compared?

What is the variable to be changed?
Length X Width

What are the variables to be kept constant?
Weight of the paper and Total area (L X W)

What is the result to be compared?
The more thin and longer of the paper it will turn more round!

e.g. use a 2 x 3 cm sq
a 1 x 6 cm sq
a 0.5 x 12 cm sq
Its area and weight were same but the no. of turn during free falling were different!!

狹義相對論
有趣而富突破性, 不會太行貨(課本內容)。

或

粒子結構
容易明白, 做project一流。