Unit 1, Lesson 1 Scientific Knowledge Quiz review

Which of these bests describes a scientific theory?

• an explanation based on the opinion of a scientist

• a well-supported and widely accepted explanation of nature

• a description of specific relationship under given conditions

• a statement describing what always happens under certain conditions

Which of these scientists would most likely engage in fieldwork to observe organisms?

• chemist

• biologist

• physicist

• mathematician

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Which of these events might lead to the modification of a scientific idea?

• A scientist uses a computer to teach a scientific concept to students.

• Two scientists doing the same experiment in different parts of the world under the same conditions get the same results.

• One scientist finds evidence that she feels doesn't fit a theory. Other scientists agree that her results are valid.

• A scientist performs an experiment and finds out that one of the chemicals used in the experiment was contaminated.

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Simon is presenting a project on scientific laws and theories. Which of the following statements should he include to explain the difference between the two?

• Scientific theories require scientific evidence but scientific laws do not.

• Scientific theories are based on observations and scientific laws are based on opinions.

• Scientific theories explain why something happens, and scientific laws describe what happens.

• Scientific theories are rarely changed and scientific laws are modified frequently.

Which of the following is a scientific law?

• Climate is changing due to human activities.

• Microorganisms are the cause of many illnesses.

• Tectonic plates move because of a flexible layer beneath them.

• Any two objects exert a gravitational force of attraction on each other.always

Diep did some research about classification for a science report. She learned that until 150 years ago, scientists recognized only two groups of organisms: plants and animals. Now, scientists also recognize several groups of microscopic organisms. How should Diep explain why scientists decided to classify organisms into more groups?

• More types of organisms exist now than before.

• Fewer organisms have gone extinct in recent years.

• Scientists continue to learn more about living organisms.

• Scientists invent new organisms that need to be classified.

Which of these scientists would likely complete their experimentation within a laboratory?

• biologist

• archeologist

• palentologist

• chemist

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This figure shows a concept related to the kinetic theory of matter, which describes the behavior of gases based on the motion of the particles. How would the kinetic theory explain what is happening to this balloon after it was taken out of a freezer?

• The balloon gets bigger as the temperature of the gas inside it decreases, because the gas particles move faster and get farther apart.

• The balloon gets smaller as the temperature of the gas inside is decreases, because the gas particles begin to escape from the balloon.

• The balloon gets bigger as the temperature of the gas inside it increases, because the gas particles move faster and get farther apart.

• the balloon gets smaller as the temperature of the gas inside it increases, because the gas particles move more slowly and get closer together.

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At a constant temperature, as the pressure on a gas increases, its volume decreases is

• Boyle's Law

• Newton's Law

• Emery's Law

• Law of Conservation of Energy

Which of the following terms means working jointed on an activity, especially to produce or create something; to work together.

• collaborate

• infer

• inference

• rigorous

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