Nature of Science Test Review

SC.7.N.1.2

Scientists frequently repeat the experiments of others scientists. Why is this important in science?

a. Scientists often ask each other for help in performing experiments.

b. Replication of experiments helps to confirm and verify results.

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

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

• a

• b

• c

• d

The variable that you may change in the experiment

• Independent Variable

• Dependent Variable

Tags

NGSS.MS-PS2-2

Variable measured during the experiment

• Independent Variable

• Dependent Variable

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is the relationship between dependent and independent variables?

• The independent variable changes based on the dependent variable

• The dependent variable changes based on the independent variable

• the are not related

• they are the same

Tags

NGSS.MS-PS2-2

Scientists create both scientific theories and scientific laws as they make observations and conduct experiments about the natural world. Which of the following statements most accurately compares the difference between scientific theories and scientific laws?

• Scientific laws are based on evidence, while scientific theories are not.

• Scientific theories involve only biology, while laws involve all types of science.

• Scientific theories involve mathematical equations, while scientific laws are based on observations.

• Scientific theories are ideas that explain natural events, while scientific laws more reliably predict natural events.

1. What is an independent variable?

• The results that we measure

• The numbers that include the units of measurement

• The factor that is manipulated or changed in order to test the effect of the change on another variable- in other words, the thing that the scientist will change or test

• The part of the experiment that the scientist must perform alone

Tags

NGSS.MS-PS2-2

What is the dependent variable?

• What I the scientist decide to test or change

• the part of the experiment that depends on aonther scientist

• the part of the axis where you must put the names of the scientists

• the fact that the experimenter measures to gather data about the effect- in other words, the results of the experiment

Tags

NGSS.MS-PS1-2

The part of an experiment that doesn't change is a _____.

• control

• constant

• conclusion

A testable idea or explanation that leads to scientific investigation

• Observation

• Data

• Hypothesis

• Theory

Tags

NGSS.MS-PS2-2

Process of obtaining information by using the senses

• Observation

• Theory

• Hypothesis

• Variable

Tags

NGSS.MS-LS1-8