Unit 1 Review

What is a hypothesis?

• An experiment in which all variables are held constant except one.

• A statement that proposes a testable explanation for a natural phenomenon. A hypothesis is based on observation and prior knowledge and is a starting point for an experiment.

• To break down something into smaller parts, closely study the parts, and determine relationships between the parts.

• The process of actively exploring topics through critical thinking in order to generate questions and interest, explanations based on evidence, and creative solutions to problems.

What is the first step of a descriptive investigation?

• Form a conclusion.

• Collect data.

• Make observations.

• Ask a questions.

What does bias mean?

• A prejudice, or unfair opinion, either for or against something or someone.

• An object or standard set of conditions that serves as a basis for comparison.

• A scientific investigation that involves observing the features of an object or a process and identifying facts that describe the object or process.

• A scientific investigation carried out in a natural setting.

What is the main purpose of a scientific investigation?

• To form an opinion.

• To test a hypothesis.

• To persuade with bias.

• To teach a lesson.

Astrology is pseudoscience. What can you can conclude about the claims made by astrology?

• They are based on logical reasoning.

• They are based on unscientific methods.

• They are based on repeated evaluations.

• They are based on critical thinking.

Which of these are the claims of pseudoscience most likely based on?

• Creative imagination

• Controlled experiments.

• Critical thinking.

• Logical reasoning.

For an experiment to produce useful data, what must happen?

• It must be performed by a famous scientist.

• It must be published in a famous journal.

• It must prove a hypothesis correct.

• It must be repeated several times.

What is a manipulated variable?

• A factor you can change in certain ways.

• A factor that changes when another factor changes.

• A factor that you don't change at all.

What is a responding variable?

• A factor that you don't change at all

• A factor you can change in certain ways

• A factor that changes when another factor changes

What is a constant?

• A factor that changes when another factor changes

• A factor that you don't change at all

• A factor you can change in certain ways