Can someone name a project i can do for my science fair for 7th grade i need a easy one

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years