describes what happens in a given experiment.

When a conclusion supports the hypothesis

one can only say the conclusion supports the hypothesis.

When multiplying and dividing sig figs, the answer can have

no more sigfigs than the factor the least # ofsigfigs

explains why something happens., describes what happens in a given experiment.

Which of the following statements are part of the kinetic Molecular Theory?

Atoms and/or molecules are in constant motion.

They make up the subatomic particles.

Data is considered invalid when

more than one variable changes during the experiment.

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AJC Physics (Science) Ch1 Test Review

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Scientific Method and Math Intro to Science

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Questions 31

Answers

1
Nonzero digits are significant only if there is a decimal point somewhere in the number
False
True
2
In a controlled experiment
the change in the dependent variable is measured.
All of the above
the independent or manipulated variable is changed.
All variables except one is held constant.
3
A law
Cannot be expressed mathematically
explains why something happens.
describes what happens in a given experiment.
None of the above
4
What is the 2nd step of the scientific method?
Ask a question
Propose a hypothesis
Perform a controlled experiment
5
The number 0101.0 has
Three significant digits
1 significant digit
2 significant digits
Four significant digits
6
The number 0.10 has
Three significant digits
Four significant digits
1 significant digit
2 significant digits
7
A good model
all of the above
obey the laws of nature.
allows predictions of future results.
best represents the system being modelled.
8
In scientific notation, M is
a positive or negative integer
none of the above.
-10<M<10
9
When a conclusion supports the hypothesis
one can only say the conclusion supports the hypothesis.
the conclusion becomes the theory.
the conclusion is proven.
no further investigation is needed.
10
Which is larger a femtometer or a terameter?
terameter
femtometer
they cannot be compared
11
In scientific notation a number is represented as
None of the above
Mn
M x 10n
M x 10n
12
How many meters in 1 kilometer?
10-3
103
10-6
106
13
Charles law is a direct relationship between volume and temperature it is mathematically
V = K + T
V = kT
V = K/T
V = K - T
14
In scientific notation, n is
none of the above.
a positive or negative integer
-10<n<10
15
When multiplying and dividing sig figs, the answer can have
no more sigfigs than the factor the least # ofsigfigs
more sig figs than either of the factors
fewer sigfigs than the factor with the most # of sigfig
16
Embedded zeroes are never significant
True
False
17
A theory
Cannot be expressed mathematically
explains why something happens.
None of the above
describes what happens in a given experiment.
18
Boyle's law is an inverse relationship between pressure and volume
P = K - V
P = K/V
P = k V
P = K + V
19
How are scientific knowledge and technology related?
All of the above
They build on each other.
Advances in one leads to advances in the other.
They are interrelated.
20
Which of the following is not an SI Base Unit?
Mole (mol)
Newton (N)
Candela (Cd)
Ampere (A)
21
Trailing zeroes are always significant
False
True
22
Accuracy and Precision are the same thing
False
True
23
Which of the following statements are part of the kinetic Molecular Theory?
Atoms and/or molecules are in constant motion.
None of the above
Matter cannot be created or destroyed
Energy cannot be created or destroyed.
24
What are quarks?
They make up the subatomic particles.
They are found only in the nucleus of an atom.
They are undefined.
They are made up of many atoms bonded together.
25
Leading zeroes are never significant
True
False
26
How many seconds in a meter?
1000
one
.001
Impossible conversion.
27
The use of significant digits keeps track of the uncertainty of measurements and calculations.
True
False
28
Data is considered invalid when
the change in the dependent variable is inconsistent.
The conclusion does not reflect the data analysis.
The conclusion does not support the hypothesis.
more than one variable changes during the experiment.
29
The number 010 has
2 significant digits
1 significant digit
Three significant digits
Four significant digits
30
There are no rules for expressing measurements in science
False
True
31
Any number can be expressed in scientific notation.
True
False

AJC Physics (Science) Ch1 Test Review Flashcards | StudBud