If my science fair project is about if girls can see through illusions better than boys, what would my background research be about?

Which standard unit is used to express frequency?

You are in a hot, dense place. You are surrounded by nuclear reactions that are rapidly fusing hydrogen into helium. You notice that your surroundings are cooling and rapidly dropping in density. Within about 5 minutes, the fusion reactions stop.

An observer (O) spots a plane (P) taking off from a local airport and flying at a 29° angle horizontal to her line of sight and located directly above a tower (T). The observer also notices a bird (B) circling directly above her.

1. Productivity is the combination of A. efficiency and energy B. efficiency and attitude C., effectiveness and resources. D. efficiency and effectiveness

Why do scientist make models?

You pull into a gas station and fill up your car with gasoline. During the time you are filling up, the car has A) kinetic energy only. B) potential energy only. C) both potential and kinetic energy. D) neither potential or kinetic energy.

Name two instruments that are based on the law of flotation

When the drag force on an object equals the force of gravity what occurs?

When two objects collide, they exert forces on each other that change momentum a. law of conservation of momentum b. recoil c. relation of Newton 3rd law to momentum d. closed system

How to convert 125 cubic centimeters to cubic miles