Lesson 1.1 Quiz Review

Select the 2 answers that state the goals of science

• a goal of science is to use observation, evidence, and experimental testing to understand phenomena in the natural and supernatural world

• a goal of science is to generate testable explanations for events in the natural world

• a goal of science is to use the best available tools and methods to gather evidence and conduct experiments that can define and support permanent database of scientific facts

• a goal of science is to make useful predictions about natural events and to understand patterns in nature by using explanations supported by data

In the methods of science, which step generally comes before the other 3 steps?

• planning an experiment

• developing a hypothesis

• conducting the experiement

• analyzing data to draw a conclusion

Kari is testing the hypothesis that plants rely on photosynthesis to grow. She conducts an experiment in which she observes the sprouting and growth of been seeds. The beans are raised either in sunlight or darkness. She records her observations in a data table.

Which statements from Kari's records convey qualitative data and not quantitative data? Choose all that apply.

• the beans in the control group have a white spot on day 2

• the beans in the control group have 1.0 cm sprouts on day 3

• the beans in the control group feel soft on day 2

• the beans of both groups appear equally green and healthy on day 1

Choose from the words: avoid errors, hypothesis, revised, sample size, select equipment, statistical analysis to fill in the blanks:

In actual physical experiments, scientists must ___________ carefully and ________________ in data collection and analysis.

Choose from the words: avoid errors, hypothesis, revised, sample size, select equipment, statistical analysis to fill in the blanks:

There is variation in nature, so the larger the ______________, the more accurately researches can determine similarities within groups and analyze differences between experimental and control groups

Choose from the words: avoid errors, hypothesis, revised, sample size, select equipment, statistical analysis to fill in the blanks:

When interpreting data, researchers use _________________ to decide if an experimental treatment is significantly different fro the control group.

Choose from the words: avoid errors, hypothesis, revised, sample size, select equipment, statistical analysis to fill in the blanks:

When drawing conclusions, the _______________ being tested may either be supported, or refuted and __________________ to be tested again

When, if ever, can a scientific theory become a scientific law?

• after rigorous testing by many scientists

• after a vote by professional scientists

• after the theory has proven useful for at least 20 years

• never, under no circumstances