Question 1

What is true about scientific knowledge?

Accepted Answer

Old theories can be modified with new scientific evidence.

Answer

New theories are always more reliable than old theories

Answer

New theories are always more reliable than old theories

Answer

Old theories are always more reliable than new theories

Question 2

Why is scientific knowledge considered durable?

Accepted Answer

It is open to change.

Answer

It does not accept uncertainty.

Answer

It is the absolute truth

Answer

It outright rejects old ideas.

Question 3

A scientific theory is based on...

Accepted Answer

data collected over time

Answer

opinions

Answer

guesses

Answer

claims

Question 4

All BUT ONE statement could describe a scientific theory. That is:

Accepted Answer

Description of how nature behaves under certain conditions

Answer

Scientific theories can be overturned by new evidence.

Answer

Newly discovered evidence may disprove a theory

Answer

New evidence can changes one part of a theory

Question 5

What happens if new scientific evidence does not fit an already published theory?

Accepted Answer

Old theories can be modified with new scientific evidence.

Answer

Old theories must be thrown out.

Answer

New theories are always true.

Answer

New theories are always better than old theories.

Question 6

In science, repetition and replication are necessary because they

Accepted Answer

make your results more reliable

Answer

allow you to save time

Answer

allow you to save money

Answer

allow you to test more than one variable at a time

Question 7

Repetition is conducting MULTIPLE TRIALS. Why is this important and necessary?

Accepted Answer

to increase the consistency and reliability of the results

Answer

to reduce the costs

Answer

to make sure the experimental hypothesis is right

Answer

to change procedures

Question 8

Which of the following best supports a scientific explanation?

Accepted Answer

experimental data

Answer

hypothesis

Answer

personal opinion

Answer

the originality of an explanation

Question 9

Which of these is least likely to provide evidence to support a scientific theory?

Accepted Answer

Strong opinions

Answer

Repeated observations

Answer

Replicated results by other scientists

Answer

Accurate measurements

Question 10

How many variables should be manipulated in a correctly performed scientific experiment?

Accepted Answer

1

Answer

as many as needed

Answer

none

Answer

2

Question 11

When scientists obtain new evidence, what happens to an existing scientific theory?

Accepted Answer

It is reevaluated.

Answer

It becomes a law.

Answer

It is revised.

Answer

It remains the same.

Question 12

The Independent variable is the one that...

Accepted Answer

...you change on purpose to test its effect

Answer

..you measure to see how it is affected by the test variable

Answer

you compare to the tested group

Answer

you keep constant throughout your investigation

Question 13

The Dependent variable is the one that...

Accepted Answer

..you measure to see how it is affected by the test variable

Answer

you keep constant throughout your investigation

Answer

you compare to the tested group

Answer

...you change on purpose to test its effect

Question 14

A Controlled Variable is the one that...

Accepted Answer

you keep constant throughout your investigation

Answer

..you measure to see how it is affected by the test variable

Answer

you compare to the tested group

Answer

...you change on purpose to test its effect

Question 15

In this graph, the Independent variable is

Accepted Answer

Time (minutes)

Answer

Temperature

Answer

Time (Days)

Answer

Temperature after 100 minutes

Question 16

In this graph, the Dependent variable is

Accepted Answer

Temperature (Celsius)

Answer

Temperature after 100 minutes

Answer

Time (minutes)

Answer

Time (Days)

Question 17

The data table summarizes the data collected during an experiment. What is the Independent Variable ?

Accepted Answer

The amount of fertilizer given to each plant

Answer

Different types of plant

Answer

Different amount of water

Answer

Mass of plants after 3 weeks

Question 18

The data table summarizes the data collected during an experiment. What is the Dependent Variable ?

Accepted Answer

Mass of plants after 3 weeks

Answer

Different amount of fertilizer

Answer

The amount of water given to each plant

Answer

Different types of plant

Question 19

In science, repetition and replication are necessary because they

Accepted Answer

make your results more reliable

Answer

allow you to save time

Answer

allow you to test more than one variable at a time

Answer

allow you to save money

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