PMA 1 - Day 1 - Quiz

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

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?

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

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

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

d. 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.

• a

• b

• c

• d

SC.6.N.1.2

Experiments are often repeated many times by the same or different scientists. What is the most important reason more than one scientist should conduct an investigation using the same methods?

a. If the results are the same, replication of the investigation helps to confirm the results.

b. The competition makes the scientists work more carefully.

c. More than one scientist is interested in the problem.

d. Different scientists might perform the experiment differently.

• a

• b

• c

• d

____________________ is the study of how energy effects matter

• observation
• physics
• meteorology
• science

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A good scientific _____________ is consistent, meaning that it can account for all existing evidence.

• world

• mole

• matter

• model

Tags

NGSS.MS-LS1-2

Scientists evaluate their own models and revise them when necessary. For example, new __________ make scientists think about a phenomenon in a new way.

• stuff

• eggs

• data

• light

__________________ is the study of life science.

• chemistry

• biology

• physics

• geology

Sal is studying the solar system. He makes a physical model using different-sized foam balls to represent the planets. Which best describes why a physical model is a useful tool for studying the solar system?

• Solar system models can be used to study a system that is too big to study directly.
• A model of the solar system eliminates the need for scientists to study the solar system directly.
• A model of the solar system provides an exact replica of the actual solar system, so scientists can experience what each planet is like.
• A model of the solar system can provide more data about the solar system than direct observations.

When scientists create a representation of a complex process, they are:

• inferring
• predicting
• classifying
• making models

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

A toy rocket, a globe or a plastic skeleton

• physical model

• dependent variable

• life science

• prediction

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS2-1