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Unit 2 Practice Test

Total questions: 50

Worksheet time: 4hrs 10mins

Name
Class
Date
1.

You know 1000 mg = 1 g. Convert 2.5 grams into milligrams.

a)

25 mg

b)

25,000 mg

c)

250 mg

d)

2500 mg

2.
5000 millimeters = ____ meters
a)
5
b)
50
c)
500
d)
25
3.
1 cm = ________mm
a)
1
b)
100
c)
10
d)
1000
4.
3 kilometers equals how many meters?
a)
3000
b)
30
c)
3
d)
400
5.

What is 4000g in kg?

a)

400

b)

40

c)

0.4

d)

4

6.
2.5 kilograms = _____ grams
a)
2500 g
b)
250 g
c)
25,000 g
d)
25 g
7.
There are ___ millimeters(mm) in 2.7 centimeters (cm)
a)
270 mm
b)
.27 mm
c)
27 mm
d)
.027 mm
8.
Convert from meters to cm:  9 meters
a)
900 cm
b)
90 cm
c)
0.9 cm
d)
0.09 cm
9.
648 g = ____ mg
a)
6,480
b)
64,800
c)
648,000
d)
64.8
10.
42 L = ___mL
a)
4,200
b)
.0042
c)
4.20
d)
42,000
11.
Write 0.000972 in scientific notation.
a)
9.72 x 10-4
b)
9.72 x 10-3
c)
972 x 10-4
d)
9.72 x 104
12.
Write 7.113 x 107 in standard form.
a)
71,130,000
b)
7,113,000
c)
0.0000007113
d)
7,113
13.
Write 0.037 in scientific notation.
a)
3.7 x 10-2
b)
3.7 x 102
c)
37 x 10-3
d)
37 x 103
14.
What is scientific notation?
a)
A long way to write really short  numbers
b)
A short way to write really long numbers
c)
I don't know...
d)
None of the above
15.
UNDERSTANDING
If the exponent is a negative number...
a)
you will get a large number
b)
you will get a small number
16.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000
17.
How many sig figs are there?
100.00
a)
1
b)
3
c)
4
d)
5
18.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
19.
How many sig figs are there?
9009.00
a)
2
b)
4
c)
5
d)
6
20.
How many sig figs are there?
4004
a)
1
b)
2
c)
3
d)
4
21.
What is the 2nd significant figure of 0.40520?
a)
4
b)
5
c)
0
d)
2
22.
Round off 509.96 to 4 significant figures.
a)
509.9
b)
509.0
c)
510.0
d)
510
23.
Solve. Round using SigFig math rules.
12.5-mL + 20.05-mL + 2.69-mL
a)
35-mL
b)
35.2-mL
c)
35.24-mL
d)
35.240-mL
24.
Solve. Round using SigFig math rules.
0.00040-m × 0.0021-m
a)
0.00000084-m2
b)
0.0000084-m2
c)
8 x 10-7-m2
d)
8.45 x 10-7-m2
25.
It is a measure of how close measurements come to each other when they are made in the same way
a)
Accuracy
b)
Precision
c)
Error
d)
Extrapolation
26.

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

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

27.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
28.
Jessie estimates the weight of her cat to be 8 pounds.  The actual weight of the cat was 10 pounds.  Find the percent error.  
a)
15%
b)
20%
c)
25%
d)
30%
29.
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
30.
How many significant figures does the following number have: 1740200
a)
2
b)
1
c)
3
d)
5
31.

Which is the more precise measurement?

a)

4 mL

b)

4.3 mL

c)

4.30 mL

d)

4.300 mL

32.
Where do we read the level of liquid?
a)
The highest point the liquid touches
b)
The bottom of the meniscus
c)
Half way between, we make an educated guess and round it
d)
Somewhere about there
33.

What is the volume of the liquid in this graduated cylinder?

a)

15.0 mL

b)

15 mL

c)

1.05 mL

d)

.15 mL

34.
How many sig figs are there?
5.00000008
a)
2
b)
6
c)
9
35.

How many significant figures are in the number? 4.06 x 10-5 m

a)

3

b)

7

c)

5

d)

unknown

36.

What is the correct answer to: 6.201 cm + 7.4 cm + 0.68 cm +12.0 cm =

a)

26.281

b)

26.28

c)

26.2

d)

26.3

37.

What is the correct answer for: 12.00 m +15.001m =

a)

27.001

b)

27.00

c)

27.0

d)

27

38.

What is the correct answer for: 1.31 cm x 2.3 cm

a)

3.013

b)

3.01

c)

3.02

d)

3.0

39.

What is the correct answer for: 20.2 cm ÷ 7.41 s

a)

2.726045884

b)

2.72604

c)

2.73

d)

2.7

40.
UNDERSTANDING
If the exponent is a positive number...
a)
you will get a large number
b)
you will get a smaller number
41.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000
42.
Write 0.00000707 in scientific notation.
a)
7.07 x 10-6
b)
7.07 x 106
c)
707 x 108
d)
707 x 10-8
43.
How many zeros would be in this number if written in standard form?
6.47 x 1011
a)
11
b)
9
c)
10
d)
12
44.
Write 2.08 x 102  in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208
45.
How would you write 50,000 in scientific notation?
a)
50 x 105
b)
5 x 104
c)
5 x 103
d)
.5 x 103
46.

What is the correct base unit for mass?

a)

Kilograms

b)

newtons

c)

pounds

d)

grams

47.
The SI unit for temperature is __?__.
a)
degree fahrenheit  (° F)
b)
degree celsius  (° C)
c)
kelvin  (K)
d)
degree centigrade  (°C)
48.

The SI unit for time is the __?__.

a)

hours (h)

b)

liter (L)

c)

gram (g)

d)

second (s)

49.

What SI unit is used to measure length?

a)

meters

b)

liters

c)

centimeters

d)

kilograms

50.

317 K is equal to

a)

44 °C

b)

-56 °C

c)

590 °C

d)

217 °C

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