Lesson 1.1 Study Guide: Science and the Natural World

A good hypothesis must be

• logical

• based on scientific knowledge.

• falsifiable

Testing a(n) ____________ involves performing a(n) ____________.

• experiment, observation

• hypothesis, experiment

• observation, hypothesis

• conclusion, prediction

Scientists must understand that

• science cannot provide answers to all questions.

• scientific ideas are fact, and can never be revised.

• sound scientific ideas are frequently altered.

• nature is a constantly changing wonder, difficult to understand.

Natural studies can be more difficult than laboratory studies because scientists

• cannot control which factor is the dependent variable.

• cannot control factors that might affect the variables they are investigating.

• cannot determine which data to analyze.

• cannot determine the best time of day to collect their data.

Which is the correct order in a scientific investigation?

• ask a question, test the hypothesis, communicate results, draw conclusions

• make observations, ask a question, form a hypothesis, test the hypothesis

• draw conclusions, ask a question, form a hypothesis, test the hypothesis

• ask a question, make observations, test the hypothesis, draw conclusions

A scientific theory is

• an educated guess.

• a guess about how or why something happens.

• a statement that describes what always happens under certain conditions in nature.

• an explanation for events that are generally accepted as true.

Life on Earth was created through a method other than evolution. This statement

• is an example of a hypothesis.

• can be proved using the scientific method.

• is outside the realm of science.

• is a scientific observation.

An example of a dependent variable is

• the amount of light plants are exposed to each day during an experimental study.

• the amount plants grow under specific conditions during an experimental study.

• the amount of fertilizer given to plants during an experimental study.

• the amount of water given to plants each day during an experimental study.

Examples of scientific models include

• a diagram of a food chain.

• a map of the solar system.

• a model of an atom showing the location of the nucleus and the electrons.

Science

• is a way of gaining knowledge about the natural world.

• is done by following the scientific method.

• is done through scientific investigations.

• none of these