4 Which statement best describes a gas? a.It has no fixed volume but has a fixed shape b.It has a fixed volume but no fixed shape. c.It has a fixed shape and a fixed volume. d.It has no fixed shape or fixed volume.
7 What will most likely happen if the force applied to a moving object increases? a.The object’s motion will change more. b.The object’s motion will change less. c.The force of gravity acting on the object will increase. d.The force of gravity acting on the object will decrease.
8 How is a hypothesis different from a testable question? a.Only a hypothesis predicts something b.Only a hypothesis includes an independent variable. c.Only a question predicts something. d.Only a hypothesis is used in scientific investigations