SC.7.N.1.5

(SC.7.N.1.5) A controlled experiment is a means for carrying out a fair test of a hypothesis. In a controlled experiment, all of the variables that can influence the outcome variable (dependent variable) of the experiment are controlled or held constant, except for the test variable (independent variable). Which of the following hypotheses would NOT be tested using a controlled experiment?

• a geologist’s hypothesis that acid rains weathers sedimentary rock more rapidly than igneous rock
• a biologist’s hypothesis increases in average temperatures causes an increase in honey bee population
• a geologist’s hypothesis about how the Grand Canyon formed
• a biologist’s hypothesis that use of fertilizer increase the growth of grass

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NGSS.MS-LS2-4

(SC.7.N.1.5) Which lists the sequence of methods a scientist would likely use if an experiment is being planned to answer a question?

• hypothesis, problem, materials, procedures, conclusion
• problem, hypothesis, materials, procedures, conclusion
• hypothesis, materials, procedures, problem, conclusion
• problem, hypothesis, conclusion, materials, procedures

(SC.7.N.1.5) Which of the following branches of science might use test variables (independent variables) and outcome variables (dependent variables) to test a hypothesis?

• physics, chemistry, biology, and geology
• biology and chemistry but not physics
• physics and chemistry but not geology
• geology and biology but not chemistry

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NGSS.MS-LS2-1

NGSS.MS-PS2-2

NGSS.MS-PS1-2

(SC.7.N.1.5) A biologist is investigating how changes in average temperature of the environment might affect butterfly metamorphosis. Which of the following methods of investigation are best suited for this research?

• models and casual observations
• controlled experiments
• random sampling of populations
• systematic observations

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NGSS.MS-LS1-5

(SC.7.N.1.5) The forces that hold the particles making up an atom together are an example of a system that is too small and dangerous to study directly. Which of the following would be the best choice for a physicist to use to present his or her findings about the strength and actions of the forces that hold the particles of an atom together?

• a circle graph
• a photograph
• a physical model
• a mathematical model

(SC.7.N.1.5) Science is systematic knowledge of the physical or material world gained through observation and experimentation. Which best describes the part of the physical or material world that is studied in physics?

• chemical reactions
• interactions of matter and energy
• properties of matter
• bacteria and animals

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NGSS.MS-PS2-2

NGSS.MS-PS2-1

NGSS.MS-PS3-1

(SC.7.N.1.5) A biologist wants to study the differences between skin cells from various animals. Which of the following tools would be best used for this study?

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NGSS.MS-LS1-1

NGSS.MS-LS1-2

(SC.7.N.1.5) A meteorologist is a scientist who studies weather. Which of the following tools would a meteorologist be least likely to use?

• satellite imagery
• computer
• barometer
• microscope

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NGSS.MS-ESS2-5

(SC.7.N.1.5) Fossils are the remains or traces of organisms that lived in the past. Fossils do not only provide clues about the types of organisms that once lived on Earth, but may also reveal clues about past climate conditions and other changes to Earth’s surface. Which two areas of science are most likely to be concerned with the study of fossils?

• Earth science and biology
• biology and chemistry
• chemistry and Earth science
• physics and biology

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

(SC.7.N.1.5) Science is systematic knowledge of the physical or material world gained through observation and experimentation. Which best describes the part of the physical world that is studied in biology?

• matter and its interactions
• Earth materials and structures
• living things
• energy and forces

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NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS1-3