Astronomers have observed that the universe is expanding and is accelerating in all directions. using this evidence, astronomers have hypothesized that a huge explosion called the big bang created the universe. which of the following correctly describes the big bang? fact theory opinion none of these a scientific theory is a well-tested explanation for a wide range of observations or experimental results. a hypothesis is a possible answer to a question. when does a hypothesis become a scientific theory? after the hypothesis is first formed by a scientist after a hypothesis is shown to correct in one experiment after the hypothesis has been confirmed through extensive testing after a competing hypothesis has failed nicolas has completed the experimental portion of the lab. which of these should he do while he works on the analysis questions? talk to his friends who are still collecting data keep his safety goggles on keep his gloves on work on another experiment he thought of how do the independent and dependent variables in an experiment compare? they are the exact same as one another. they have no effect on one another. the dependent variable controls the independent variable. the independent variable controls the dependent variable. i need asap