Which of the following might lead to the changing of a scientific idea?

a scientist gets results that do not fit a current idea and other scientists find his results are valid

A scientist describes an experiment to a group of students

A scientist gets the same results when repeating an experiment a second time

a scientist has to redo her experiment because she finds the correct procedure was not followed

When forming a conclusion you should

Prove or disprove your hypothesis

State it as an if/ then statement

How are theory and hypothesis alike?

They attempt to explain natural phenomenon.

Neither of them can be revised.

They both describe an event in nature.

Why would a scientist run an experiment with several trials instead of a single trial?

Repetition increases the accuracy of the results

Repetition increases the sample size

Replication lets the experimenter change variables

Replication lets the the experimenter change the procedure

Which list is in the correct order that a scientist might follow during an experiment?

Collect Data -> Analyze Data ->Conclude

Collect Data -> Form Hypothesis -> Create a Question

Form a Procedure -> Ask a question-> Form an opinion

Analyze Data -> Run an experiment -> Form a Procedure

Which phrase best describes why a scientist would modify an idea

Scientist gained new data and then debated the change

They wanted to prove another scientist wrong

Scientist had to much information to look at

What does it mean to replicate

performing another scientist's study; following the same procedures

Copy another person's answers down

Complete repeated trials of an experiment to test the authentication of data

Collect data and put it in a chart

What does it mean to go through repetition?

To complete many trials over and over to authenticate data

To change the variables and retest

To copy another scientist's answers

To perform another scientist's study to check the procedure and data

What is the difference between an independent and a dependent variable?

The dependent variable changes based on the independent variable.

The dependent variable does not change while the independent variable does

The dependent variable does not change while the independent variable does not change

The dependent variable is the test variable and the independent is the outcome variable

What could change a scientific idea?

New evidence doesn't support a theory, other scientist agree with the new finding

technology is used to teach a specific concept

two scientist replicating the same experiment under the same conditions gain different results

An experiment is found out to have contaminated variables.

Researchers were studying Disney employees and how they traveled to work. They collected their findings and graphed the data. Which question could the graph be used to answer?

How many more Disney employees take the bus than walk to work?

What is the number of cars owned by Disney employees?

How many Disney employees can ride a bike?

Ho many Disney employees ride with another person to get to work?

Samantha runs an experiment and collects data on how far a ball travels. She runs four trials and the last one is drastically different from the first three. How could she improve the accuracy of the investigation?

Get rid of the data that is different

average the data from each trial together

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.

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

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

Caira reads in a science journal that replication and repetiton 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 repeats an experiment; replication is when a scientist conducts an experiment on genetic material.

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 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.

Nature of Science

Authored by Coretta Pifer

Science

7th Grade

NGSS covered

Used 26+ times

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55 questions

Show all answers

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Justin blows his nose, but mucus seems to leak through the tissue. He decides to test which tissue holds up the best while sneezing. What is the independent variable?

sneezing

Justin

amount of tissue

type of tissue

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Mr. McNeice wanted to know if different types of music affected people's heart rates, so he played different music and checked their pulses. What is the dependent variable?

type of music

heart rate

how long they listend to music

Mr. McNeice

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

This is the outcome of the experiment. We get data and results from this.

Independent Variable

Dependent Variable

Control

Constant

Tags

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

How many independent variables should be tested at a time in a scientific investigation?

none

one

two

three

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which is the dependent variable in Amelia's experiment?

the number of bean plants in each group

the amount of water given daily to each plant

the height of each bean plant

the amount of fertilizer given to each group of bean plants

Tags

NGSS.MS-LS1-5

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The variable that is changed on purpose is:

Control

Dependent

Independent

Outcome

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

When experimenting with the growth of a plant, a scientist uses three plants, two different fertilizers, equal light, and equal water. What type of variable is the water?

Dependent

Independent

Control

Outcome

Tags

NGSS.MS-ETS1-1

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Nature of Science

Justin blows his nose, but mucus seems to leak through the tissue. He decides to test which tissue holds up the best while sneezing. What is the independent variable?

Mr. McNeice wanted to know if different types of music affected people's heart rates, so he played different music and checked their pulses. What is the dependent variable?

This is the outcome of the experiment. We get data and results from this.

How many independent variables should be tested at a time in a scientific investigation?

Which is the dependent variable in Amelia's experiment?

The variable that is changed on purpose is:

When experimenting with the growth of a plant, a scientist uses three plants, two different fertilizers, equal light, and equal water. What type of variable is the water?

Which of the following might lead to the changing of a scientific idea?

During a scientific investigation which step will a scientist likely perform first?

I want to see how the amount of water affects plant growth. What is the independent variable?

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