(SC.8.N.1.1) The following diagram shows the shadows cast by a sign at two different times during the day. Which of the following predictions states what the shadow most likely will look like at 6:00 p.m.?

The shadow will be longer than the 4:00 p.m. shadow.

The shadow will be the same length as the 2:00 p.m. shadow.

The shadow will be shorter than the 2:00 p.m. shadow.

The shadow will be the same length as the 4:00 p.m. shadow.

(SC.8.N.1.1) Matthew records the temperature outside for one day. From 10:00 a.m. to 12:00 p.m., the temperature rises 4°C. From 12:00 p.m. to 2:00 p.m., it rises another 3°C. From 2:00 p.m. to 4:00 p.m., it drops 2°C. Which of the following predictions about how the temperature will change between 4:00 p.m. and 6:00 p.m. is most reasonable?

The temperature will drop 4°C.

The temperature will stay the same.

The temperature will drop 14°C.

The temperature will rise 3°C.

(SC.8.N.1.1) Marissa wants to know which of four routes that she could possibly take on her walk to school is the fastest. Which of the following is the best way for Marissa to gather information to answer this question?

She should walk each route herself at a normal pace and time how long each takes.

She should take a survey of her friends to find out what they think is the fastest route.

She should look on a map to see which route looks shortest.

She should have four friends each take one route and observe who arrives at school first.

(SC.7.N.1.2) Tamer understood that reproducibility is an important part of the scientific method. Therefore, he repeated his experiment on fur color in rabbits four separate times and obtained the same result each time. However, his teacher informed him that his results had not yet been proven valid and suggested that his experiment be conducted by another student at different school. Which of the following is the best reason for this recommendation?

If Tamer’s results were replicated, they would be more valid.

The student at the other school was struggling.

The teacher knew that Tamer had errors in his experiment.

The two schools often swapped science experiments.

(SC.7.N.1.2) Tanya developed an experiment and then performed it multiple times. Ian also performed Tanya’s experiment. Which of the following best describes Tanya and Ian’s actions?

Tanya was repeating her experiment and Ian was replicating Tanya’s experiment.

Tanya was conducting a scientific investigation, but Ian was not.

Tanya was looking for additional information and Ian was repeating Tanya’s experiment.

Tanya was correcting flaws in her experiment and so was Ian.

(SC.7.N.1.2) Tiffany repeated her experiment about light and color four times. Each time, she got different results and she became discouraged. However, her teacher informed her that she was working like an actual scientist. Which of the following is the best explanation for her teacher’s statement?

The teacher knew scientists always repeat experiments.

The teacher did not know that Tiffany’s results kept changing.

The teacher wanted to motivate Tiffany to keep working.

The teacher was always kind to students.

(SC.7.N.1.2) Dr. Yardley conducted the same experiment on plants six times before publishing her results. Dr Yourman repeated her experiment on earthworms only twice, then two independent laboratories replicated her experiment. Why are Dr. Yourman’s results more widely accepted than Dr. Yardley’s?

Dr. Yourman’s results were replicated, and Dr. Yardley’s were not.

Dr. Yardley repeated her experiment too many times for it to be valid.

Dr. Yardley’s results were considered significantly more important than Dr. Yourman’s.

Experiments on earthworms are considered more important than experiments on plants.

(SC.7.N.1.2) Results in science are not generally accepted as being accurate until they can be verified. Which of the following is an example of repetition in science?

A student designs an experiment on plant growth that includes multiple trials.

A scientist analyzes the data included in the published work of another scientist and agrees with the conclusions.

A scientist poses a new question for investigation after reading the results of another scientist’s work.

One scientist carries out the same experiment performed by another scientist to validate the results.

(SC.7.N.1.2) Dr. Taylor performed an experiment on the aggressiveness of two different species of bees. After he completed one trial of his experiment, he summarized the results and sent them to a scientific journal for publication. The journal rejected his article and would not publish it. Which of the following is the most likely reason for the journal’s?

Scientists must do several repetitions of an experiment before its results are believable.

The journal only published articles concerning medical science.

Dr. Taylor wrote up his results too quickly and it was of poor-quality.

Dr. Taylor had already published a number of articles in that publication and had reached his limit.

(SC.7.N.1.2) Darren conducted an experiment on the effect of different types of drinks on athletic performance. He gave milk to one group of runners, water to another group of runners, and a low-carbohydrate sports drink to a third group of runners. He timed how long it took each group to run 100 meters and then averaged each group’s times. He repeated the experiment three times and compiled his results in the table below. Which of the following reasons best explains why Darren repeated his experiment three times?

He repeated his experiment to make his results more reliable.

He was trying to obtain different experimental results.

He knew that all experiments should be repeated three times.

He did not perform the experiment correctly the first two times.

(SC.7.N.1.2) Scientists frequently repeat the experiments of others scientists. Why is this important in science?

Replication of experiments helps to confirm and verify results.

Scientists often ask each other for help in performing experiments.

Repeating experiments is an effective way to make sure a laboratory is in optimal condition.

Scientists frequently perform other scientists’ experiments in order to practice their technique.

(SC.7.N.1.2) Cara read an article on why repetition and replication are so important, but she did not understand the difference between them. Which of the following best explains the two terms?

Repetition is when a scientist does the same experiment a number of times; replication is when other scientists reproduce a scientist’s experiment.

Repetition is when a scientist publishes in more than one scientific periodical; replication is when another scientist reproduces another scientist’s results.

Repetition is when a scientist repeats an experiment; replication is when a scientist conducts an experiment on genetic material.

Repetition is when a scientist commits an error in an experiment the first time and must repeat it; replication is when a scientist repeats an experiment to make sure it is valid.

(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?

interactions of matter and energy

(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

(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?

problem, hypothesis, materials, procedures, conclusion

hypothesis, problem, materials, procedures, conclusion

hypothesis, materials, procedures, problem, conclusion

problem, hypothesis, conclusion, materials, procedures

(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 about how the Grand Canyon formed

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 biologist’s hypothesis that use of fertilizer increase the growth of grass

(SC.6.N.2.2) The principle of spontaneous generation was believed for hundreds of years. That principal stated that new life could come about from nonliving things. For example, people observed that a baby clam suddenly appears in the mud so they thought that the clam was created from the mud. Today, science states that new life comes about from other living things. What allowed this change of ideas to be accepted?

Experiments and evidence were provided for the new ideas.

The person who proposed the new ideas was well known.

New equipment proved mud could not produce clams.

Important officials in government agreed with the new ideas.

(SC.6.N.2.2) The nature of science is that it is open to new ideas. If this were NOT true, what might happen?

When an idea was supported by evidence, scientists might ignore new contradictory evidence.

Science would advance increasingly accurate ideas about the natural world, based on logic alone.

Scientists would propose ideas to revise accepted hypotheses about nature.

The scientific process of hypothesizing and experimentation would continue just as it is.

(SC.6.N.2.2) Scientific knowledge is capable of lasting a long time. What makes scientific knowledge hold up so well over time?

As new evidence is presented, scientific knowledge is open to revision.

Once established, scientific laws cannot be broken or revised.

Scientific knowledge is published in well-respected journals, so it is easy to locate.

Scientific knowledge is well researched and permanent.

(SC.6.N.2.2) Many years ago, people thought that the Sun revolved around Earth. Copernicus proposed that Earth revolved around the Sun. This was a huge change in the way humans understood the world. Why didn't this reversal of ideas cause people to give up on the idea of science?

because the process of science allows for changes to be made as new evidence is found

because the earlier ideas were not based on observations of the movements of objects in the sky

because people have always believed that scientists can find the answers

because people trust in science and always accept new ideas

(SC.6.N.2.2) Jacob says that science is just a huge collection of unchangeable facts. Why is he wrong?

Science is a process that allows for ideas to be changed as new evidence is presented.

Science includes not just facts but also concepts.

Science is the systematic collection of those unchangeable facts.

Science facts can be changed as long as all scientists agree about the change.

(SC.6.N.2.2) Scientific understandings can change as new information is discovered. Which of the following is an example of how scientific understandings have changed?

The understanding of mountain building and earthquakes changed once people accepted the theory of plate tectonics

The law of universal gravitation has not been tested many times and is no longer taught in science.

People once thought Earth was round. Now they understand that it is flat.

The inclined plane, which is a simple tool that may have been used by the Egyptians to build the pyramids, now has other applications.

(SC.6.N.2.2) A long-standing question in science has been, "What caused the dinosaurs to become extinct?" In the mid-1900s, the idea was proposed that caterpillars ate so many leaves that dinosaurs starved and could not reproduce. Today, the most commonly accepted idea is that a large body from space hit Earth and triggered the extinctions. What does this change in scientific thinking provide evidence of?

that scientific knowledge is open to change

that scientists change their minds regularly

that scientists don't know what happened

that scientific information is universal

(SC.6.N.2.2) The Wright brothers are famous for inventing the first powered airplane. The brothers studied the work of earlier inventors. To test their ideas, they built a wind tunnel. They started simply, by studying kites, and then moved to more complex gliders. Ultimately, they developed a powered flying machine. Which of the following reasons is most likely to have led to the Wright brothers' success?

They used a scientific approach and developed new ideas from failed experiments.

They had plenty of money to fund their experiments.

They studied only the successes of previous inventors.

They were lucky and smart and brave.

(SC.7.N.3.1) Charles Darwin developed the theory of evolution by natural selection, which states that organisms that are best suited for their environment survive and reproduce. This can cause the population to change, or evolve, over time. Below are images of a species of bird found in four different parts of the world. How does this evidence support Darwin’s theory?

The same species of bird has evolved differently to best fit its environment.

Birds with different beak types evolved into one species of bird.

Birds with different beak types migrated to wherever they could best use their beak.

The same species of bird has always had different types of beaks.

(SC.7.N.3.1) The theory of plate tectonics states that Earth’s crust is made of sections that move. Which of the following is NOT evidence that can be used to support the theory of plate tectonics?

The same species of bird is found in North America and South America.

The sea floor is spreading apart from mid-ocean rifts.

Mountains push up where two plates bump into each other.

The continents look as if they fit together like pieces of a jigsaw puzzle.

(SC.7.N.3.1) Over time, scientists’ ideas about the structure of atoms have changed. Historic and current models of the atom are shown below. What must happen for the current model to continue to be accepted?

Experimental evidence will need to continue to provide evidence for the current model.

Scientific opinion will need to continue to support the current model of the atom.

Scientists will need to build better microscopes so they can examine atoms more closely.

Experimental evidence will need to provide evidence that the other models are not accurate.

(SC.7.N.3.1) Scientific theories and scientific laws are developed and used by scientists. Which statement about theories and laws is true?

Theories and laws both help scientists understand the natural world.

Laws are developed based on existing theories.

A theory and a law are the same thing.

Theories are used in physical science and laws are used in earth science.

(SC.7.N.3.1) Dr. Downing conducts an experiment. The data she collects conflict with an accepted theory. What should she do?

Conduct more experiments to see if her results continue to conflict with the theory.

Assume that her data are wrong.

Immediately notify other scientists that the accepted theory is wrong.

Change her data to match the accepted theory.

(SC.7.N.3.1) Scientists in all branches of science have developed scientific theories. Which of the following statements is true about all scientific theories?

Scientific theories are based on large amounts of evidence.

Scientific theories are based on the work of individual scientists.

Sometimes there is not a lot of evidence to support a scientific theory.

Scientific theories are not widely accepted when they are first developed.

(SC.7.N.3.1) Which best explains the difference between a scientific theory and a scientific law?

A theory explains a set of observations; a law describes a pattern in nature.

A law is based on evidence; a theory is based on ideas.

Biologists develop theories; geologists develop laws.

A theory can become a law; a law cannot become a theory.

(SC.7.N.3.1) Suppose that new evidence from many new experiments does not support an existing scientific theory. Which of the following is most likely to happen?

New experiments will be conducted until evidence supporting the theory is obtained.

The new evidence will be changed to support the theory.

The theory will not be affected in any way.

AA Nature of Science Standards: 8G

Quiz

•

Science

•

6th - 8th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-LS1-5, MS-LS4-2, MS-LS1-1

+26

Standards-aligned

Z Cardinalz

Used 29+ times

FREE Resource

50 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.8.N.1.1) The following graph shows the number of male and female athletes that participated in sports at Adams College. What conclusion can be made from studying the graph?

The number of women playing sports was less than the number of men playing sports between 2005 and 2008.

The number of women playing sports at Adams College will continue to increase after 2008.

The number of women playing sports steadily increased between 2005 and 2008.

The percentage of the total athletes who were women grew between 2005 and 2008.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.8.N.1.1) As part of a neighborhood cleanup, Susan collects trash in the park. She then sorts through the trash and categorizes it into different types. She finds most of the items were made from paper, followed by plastic, and then metal. What conclusion could Susan draw from her observations?

Plastic is more harmful to the environment than other types of trash.

People do not realize that paper is easily recycled.

People are more likely to litter with paper than other types of trash.

Children are more likely to litter than adults.

(SC.8.N.1.1) The following bar graph shows the population of bacteria under different temperature ranges. What can be concluded about the bacteria from reading this graph?

They prefer temperatures between 20°C and 30°C.

They thrive at exactly 30°C.

They prefer warmer temperatures to cooler temperatures.

They cannot tolerate temperatures above 50°C.

(SC.8.N.1.1) Sean is planning an investigation to test which materials conduct electricity. To do this, he will set up a simple circuit using a battery, wire, and a light bulb. Then, he will complete the circuit with objects made from different materials and he will observe whether the bulb lights up. In this experiment, what is the outcome variable (dependent variable)?

whether the bulb lights

the strength of the battery used

how bright the bulb glows

the object used to complete the circuit

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.8.N.1.1) The following line graph tracks the average salaries of employees at a company. Which of the following observations about the information in the graph is most accurate?

The average salary mostly increased between 2000 and 2008.

The average salary mostly decreased between 2000 and 2008.

The average salary increased every year between 2000 and 2008.

The average salary mostly stayed the same between 2000 and 2008.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(SC.8.N.1.1) Caleb wants to know how salt affects the boiling point of water. What is the best way for Caleb to collect data to answer this question?

Add 1 gram of salt to 1 liter of water and 10 grams of salt to a second liter; time how long it takes for each to boil.

Bring 1 liter of water to a boil, then add 1 gram of salt and observe any changes.

Add 1 gram of salt to 1 liter of water and leave a second liter free of salt; time how long it takes for each to boil.

Add 1 gram of salt to 1 liter of water and time how long it takes for the water to boil.

(SC.8.N.1.1) Latasha recorded the temperatures every three hours throughout the day and constructed the graph below using her results. Based on the information in the graph, what would be the best prediction about the temperature at 10:30 p.m.?

27°C

24°C

29°C

20°C

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