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Unit 2 Second Quiz Review

Total questions: 74

Worksheet time: 2hrs 28mins

Name
Class
Date
1.

(a)   is a measure of how close measurements come to each other when they are made in the same way.

2.
a)

Student A

b)

Student B

c)

Student C

d)

Cannot be determined

3.

How close a measurement is to the accepted value is called (a)   .

4.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
5.

This bullseye demonstrates...

a)

High Accuracy & High Precision

b)

High Accuracy & Low Precision

c)

Low Accuracy & High Precision

d)

Low Accuracy & Low Precision

6.

Describe the accuracy and precision of the image

a)

Very accurate and somewhat precise

b)

Very accurate but not precise at all

c)

Not accurate at all but very precise

d)

not accurate and not very precise

7.

A set of data are all close in value to each other, but they are not close to the actual value. This set of data can be described as _________________.

a)

precise

b)

accurate

8.

Which best describes the target?

a)

Precise, but not accurate

b)

Accurate but not precise

c)

Precise and accurate

d)

Neither accurate nor precise

9.

Accuracy means

a)

the measurements are close to each other

b)

the measurement is close to the true value

c)

the measurements are close to each other

d)

the measurements are close to each other and the true value.

10.

Which student is the most ACCURATE?

a)

A

b)

B

c)

C

11.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
12.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
13.
This image is an example of...
a)
precision ONLY
b)
accuracy ONLY
c)
BOTH precision and accuracy
d)
NEITHER precision and accuracy 
14.
Describe the accuracy and precision of the image
a)
Accurate and Precise
b)
Accurate and not precise
c)
Not Accurate and Precise
d)
not accurate and not precise
15.

How close a measurement is to the accepted value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

16.
A set of data are all close to each other, but they are not close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
17.
A set of data are all close to each other, and they are close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
18.

Measurements: 24.9, 25.2, 25.1, 24.8

True Value: 25.0

These measurements are…

a)

Accurate, but not precise

b)

Precise, but not accurate

c)

Both precise and accurate

d)

Neither precise nor accurate

19.

Measurements: 2.5, 14.5, 10.1, 45.3

True Value: 25.0

These measurements are…

a)

Accurate, but not precise

b)

Precise, but not accurate

c)

Both precise and accurate

d)

Neither precise nor accurate

20.

What is the length?

a)

7

b)

7.7

c)

7.70

d)

7.700

21.

What is the volume?

a)

50

b)

45

c)

45.0

d)

40.5

22.

WHAT IS THE VOLUME?

a)

36

b)

36.5

c)

37.0

d)

36.0

23.

WHAT IS THE LENGTH?

a)

11.45

b)

11.4

c)

11

d)

11.450

24.

WHAT IS THE VOLUME?

a)

20.15

b)

20.1

c)

21.5

d)

21.50

25.

WHAT IS THE LENGTH?

a)

29

b)

29.2

c)

29.20

d)

30

26.

Which statistic tells you about accuracy?

a)

Percent Error

b)

Standard Deviation

c)

Two Sigma

d)

T Test

27.

Which statistic tells your about precision

a)

Percent Error

b)

Standard Deviation

c)

Two Sigma

d)

T Test

28.

Which statistic tells you if your "true value" is close enough to your experimental value?

a)

Percent Error

b)

Standard Deviation

c)

Two Sigma

d)

T Test

29.

Which statistic tells you if your two sets of data are the same or different?

a)

Percent Error

b)

Standard Deviation

c)

Two Sigma

d)

T Test

30.

What would tell you that the copper and silver pennies are really the same substance?

a)

If the T Test P value is greater than .05

b)

If the T Test P value is smaller than .05

c)

If the average density of the silver penny is two standard deviations away from the true value

d)

If the percent error is less than 33%

31.

Why would you use percent error?

a)

If you wanted to know how accurate your measurement of density was

b)

If you wanted to know how precise your measurement was

c)

If you wanted to know if your substance was really gold

d)

If you wanted to know if silver and gold pennies are made of the same metal

32.

Why would you use standard deviation?

a)

If you wanted to know how accurate your measurement of density was

b)

If you wanted to know how precise your measurement was

c)

If you wanted to know if your substance was really gold

d)

If you wanted to know if silver and gold pennies are made of the same metal

33.

Why would you use the 2 sigma test?

a)

If you wanted to know how accurate your measurement of density was

b)

If you wanted to know how precise your measurement was

c)

If you wanted to know if your substance was really gold

d)

If you wanted to know if silver and gold pennies are made of the same metal

34.

Why would you use the T Test?

a)

If you wanted to know how accurate your measurement of density was

b)

If you wanted to know how precise your measurement was

c)

If you wanted to know if your substance was really gold

d)

If you wanted to know if silver and gold pennies are made of the same metal

35.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
36.
What units are used to measure mass?
a)
g
b)
cm3
c)
g/cm3
d)
cm3/g
37.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
38.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
39.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
40.
Helium balloons rise on earth because
a)
helium is less dense than air
b)
helium is more dense than air
c)
helium is cooler than air
d)
helium is warmer than air
41.

A crayon has a mass of 10.0 g and volume of 5.0 cm3. What is the density?

a)

30 g/cm3

b)

1.0 g/cm3

c)

15 g/cm3

d)

2.0 g/cm3

42.

Mass is the amount of _______ an object has

a)

Matter

b)

weight

43.

What is this tool called....

a)

Ruler

b)

Thermometer

c)

Beaker

d)

Graduated Cylinder

44.

 

What two types of measurements make up DENSITY? 

a)

Volume and Weight

b)

Temperature and Mass

c)

Mass and Volume

45.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
46.
a)

15 cm3

b)

50 cm3

c)

150 cm3

d)

180 cm3

47.
What is the volume of the fish?
a)

18.0 ml

b)

6.0 ml

c)

38.0 ml

48.

The block of wood has a mass of 2.00 kg and a volume of 5.00 cm3. What is the density of the wood?

a)

4 kg/cm3

b)

.4 kg/cm3

c)

40 kg.cm3

d)

4.5 kg/cm3

49.

A solid ball has a mass of 50 grams and a volume of 20 cm3. What is the density?

a)

2 g/cm3

b)

25 g/cm3

c)

2.5 g/cm3

d)

3 g/cm3

50.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
51.
Express the following number in scientific notation: 
0.00075
a)
7.5 x 10-4
b)
7.5 x 104
c)
7.5 x 103
d)
7.5 x 10-3
52.
Express the following number in scientific notation: 
18,000,000
a)
1.8 x 107
b)
18 x 106
c)
1.8
d)
1.8 x 10-7
53.
Try to change the number back to standard form:  6.79  x  104
a)
679,000
b)
6,790
c)
67,900
d)
6,790,000
54.

A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?

a)

8.96 g/cm3

b)

79.6 g/cm3

c)

96.9 g/cm3

d)

5.4 g/cm3

55.

A block of wood has a volume of 3 cm3 and has a mass of 27 g. What is the density of the block?

a)

11.1 g/cm3

b)

24 g/cm3

c)

9 g/cm3

d)

0.45 g/cm3

56.

A block of aluminum occupies a volume of 15.0 ml and has a mass of 40.5 g. What is the density of the aluminum?

a)

3.70 g/ml

b)

55.5 g/ml

c)

2.70 g/ml

d)

25.5 g/ml

57.

Mercury metal is poured into a graduated cylinder that has a volume of 22.5 ml. The mercury used to fill the cylinder weighs 306 g. From this information, calculate the density of mercury.

a)

7.35 g/ml

b)

13.6 g/ml

c)

20 g/ml

d)

60.25 g/ml

58.

Which digits are significant?

0.0039270

a)

0.0039270

b)

0.0039270

c)

0.0039270

d)

0.0039270

59.

Which digits are significant?

36000.

a)

36000.

b)

36000.

c)

36000.

d)

36000.

60.

Which digits are significant?

10.512

a)

10.512

b)

10.512

c)

10.512

d)

10.512

61.

Round 0.010229 to four significant figures

a)

1022

b)

1023

c)

0.01023

d)

0.01022

62.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

63.

What is 7.555 rounded to two significant figures?

a)

7.6

b)

7.5

c)

70

d)

76

e)

7.60

64.
Round 0.00258954 to 4 significant figures.
a)
0.0025
b)
0.002589
c)
0.002580
d)
0.002590
65.
Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.
a)
1.0 m2
b)
1.1 m2
c)
1.0947 m2
d)
1.095 m2
66.
Calculate 12.47 m ÷ 3.2 s and give your answer with the correct number of significant figures.
a)
4 m/s
b)
3.9 m/s
c)
3.90 m/s
d)
3.897 m/s
67.
Calculate 0.020 cm x 50 cm x 11.1 cm and give your answer with the correct number of significant figures.
a)
10 cm3
b)
11.1 cm3
c)
11 cm3
d)
11. cm3
68.

Solve. Round using SigFig math rules.

1.3562 mL / 14.32 g

a)

0.094 mL/g

b)

0.0947 mL/g

c)

0.094706 mL/g

d)

0.09471 mL/g

69.

Perform the following calculation and round to the proper number of significant figures:

12.34 + 1.234 + 0.1234

a)

13.6974

b)

13.697

c)

13.70

d)

13.7

70.
Solve and give your answer with the correct number of significant figures
24.28 + 12.5
a)
3.687 x 101
b)
36.8
c)
37
d)
3.70x101
71.

Which one is rounded correctly for the following equation?

1.987 - 0.48 = ?

a)

1.5

b)

1.51

c)

1.507

d)

2

72.

Which answer is rounded to the correct place for the equation below?

457.1 + 459.32 = 916.42

a)

916.42

b)

916.4

c)

916.0

d)

916

73.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
74.
How many sig figs are there?
4004
a)
1
b)
2
c)
3
d)
4

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