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Transcript

Crossbow

Experiment

PRO

What I learned

Conclusions

My hypothesis was correct. I launched the matchstick 7 feet instead of 8 feet.

Some factors included: the wind, the angle of launch, tightness of the match was placed on the crossbow .

Next time, I could use a different rubber band, change the launch angle or change the amount of rubber band used.

What do I want to find out?

questions

Can I make a crossbow? with only 3 clothes pins, 1 rubber band, and a match stick to launch?

step by step

Procedure/Material

Materials clothespins, rubber bands, tape, matchsticks

Procedure

1) gather materials

2) you put the tape on half clothespin with the rudder band

3) walk to the launch pad

4) put match on crossbow

5) launch crossbow

6) measure how many feet the match went

Hypothesis

If I am able to make a crossbow, then I think I can launch a match stick 8 feet.

Hypothesis

Purpose &

Question

What do I want to find out?

can i make a crossbow with just clothespins a rubber bands and tape?

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