Which of the following is an example of qualitative data?a. The fish swam in a zigzag motion.b. The contents of the stomach are mixed every 20 seconds.c. The temperature decreased from 20°C to 15°C.d. The six pairs of robins hatched an average of three chicks each.

Which of the following statements best distinguishes hypotheses from theories in science?a. Theories are hypotheses that have been proven.b. Hypotheses usually are narrow in scope; theories have broad explanatory power.c. Hypotheses are tentative guesses; theories are correct answers to questions about nature.d. Hypotheses and theories are different terms for essentially the same thing in science.

One hypothesis states that eating chicken noodle soup is an effective treatment for colds. Which of the following results does this hypothesis predict?a. People who eat chicken noodle soup have shorter colds than do people who do not eat chicken noodle soup;b. People who do not eat chicken noodle soup experience unusually long and severe colds;c. Cold viruses cannot live in chicken noodle soup;d. People who eat chicken noodle soup feel healthier than do people who do not eat chicken noodle soup;e. Consuming chicken noodle soup causes people to sneeze

Which of the following statements best distinguishes hypotheses from theories in science?a. Theories are hypotheses that have been proved.b. Hypotheses are guesses; theories are correct answers.c. Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.d. Theories are proved true; hypotheses are often contradicted by experimental results.

If I perform a hypothesis test in which I demonstrate that the prediction I made in question 5 is true, I have .a. proved the hypothesis;b. supported the hypothesis;c. not falsified the hypothesis;d. B and C are correct;e. A, B, and C are correct

Which sentence best describes the logic of scientific inquiry?a. If I generate a testable hypothesis, tests and observations will support it.b. If my prediction is correct, it will lead to a testable hypothesis.c. If my observations are accurate, they will support my hypothesis.d. If my hypothesis is correct, I can expect certain test results.

Which of the following is a true statement of observational data?a. It is always qualitative, not quantitative.b. It is used to form hypotheses, but not to test them.c. It can include comparisons of fossils as well as DNA sequences.d. It is the type of data used for the independent variable in a controlled experiment.

PROCESS OF SCIENCE Explain why researchers formulate a null hypothesis in addition to a hypothesis when designing an experimental study.

A friend tells you that the theory of evolution is just an educated guess by biologists about how things work. Evaluate this statement.