Ineed finding a science project for an 8th grader but i can't use the things on the pic

For my 8th grade science fair I built a Newton's Cradle. It was really cool!! I'm a procrastinator too but I was able to knock it out the day before. It's a great demonstration of the laws of motion.(physics)

C) the increase in atmospheric pressure pushes the walls of the balloon outward thus making it  is the answer.hope i you.

Mg-26 and mg-24 are pair of isotopes. isotopes are defined as atoms of the same element having same atomic number but different mass number. i hope that was .