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unit 1 thinking scientifically

Total questions: 89

Worksheet time: 2hrs 18mins

Name
Class
Date
1.

A theory is a ____.

a)

proposed explanation for an observation

b)

well-tested explanation for a broad set of observations

c)

summary of the results of many observations

d)

procedure used to test a proposed explanation

2.

The statement "If a balloon gets warm, it will expand." is which of the following?

a)

claim

b)

evidence

c)

reasoning

d)

observation

3.

the statement "the balloon increases diameter from 6 cm to 8 cm." is which of the following?

a)

claim

b)

evidence

c)

reasoning

d)

conclusion

4.

The statement "The temperature of the balloon increase from 27o to 30o." is which of the following.

a)

claim

b)

evidence

c)

reasoning

d)

problem

5.

"Since the TV turned on after I put fresh batteries in the remote control, the old batteries must have been drained." Which type of statement is this?

a)

claim

b)

evidence

c)

observation

d)

reasoning

6.

"The TV won't turn on because the power is out." is which of the following types of statements?

a)

reasoning

b)

evidence

c)

claim

d)

experiment

7.
A claim is ______________________________.
a)
a kind of shellfish often used in chowder. 
b)
a fact.
c)
a statement or conclusion that answers the original question or problem
d)
a bad thing to make about something.
8.
Evidence is ___________________
a)
A statement or conclusion that answers a question
b)
Scientific data that supports the claim
c)
A justification that connects the claim to the evidence
d)
Not vital when using an argument
9.
Reasoning is __________________.
a)
A statement of conclusion that answers the original question/problem
b)
Scientific data that supports the claim
c)
A justification that connects the evidence to the claim
d)
Empirical Evidence
10.

The __________ is what changes in the experiment.

a)

control

b)

variable

c)

changling

d)

updog

11.

The ________ is all the stuff that stays the same in the experiment

a)

control

b)

variable

c)

corndog

d)

number

12.

Being ______________ means being as close as possible to the desired value.

a)

accurate

b)

precise

c)

friendly

d)

superclose

13.

Being ____________ means getting the same results over and over.

a)

accurate

b)

precise

c)

friendly

d)

precious

14.

In order to support a claim you need ____________.

a)

courage

b)

evidence

c)

google

d)

snew

15.

an explanation based on a whole lot of evidence for a broad range of observations

a)

Hypothesis

b)

Fact

c)

Law

d)

Theory

16.

a testable question/statement that is based on observations. (can be rejected)

a)

hypothesis

b)

fact

c)

law

d)

theory

17.

One can perform a test on this type of explanation.

a)

law

b)

theory

c)

hypothesis

d)

testable

18.

The broad explanation about the origin of the universe.

a)

theory

b)

fact

c)

law

d)

hypothesis

19.
A representation that explains how something is built or works
a)
design
b)
model
c)
black box
d)
collaboration
20.
Which of these is not a model?
a)
hot wheels/match box car
b)
action figure doll
c)
dump truck
d)
a picture of the inside of humdinger
21.
What is 2D and cannot be manipulated but still explains how something looks or works?
a)
globe
b)
skeleton
c)
conceptual model
d)
physical model
22.
A _____________________ is something that scientists use to represent an object or process
a)
mass
b)
matter
c)
model
d)
weight
23.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
24.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
25.
A series of steps used by scientists to solve a problem or answer a question. 
a)
scientific method
b)
recipe
c)
data collection
d)
metric system
26.
In a controlled experiment, how many variables can be worked with at a time? 
a)
one
b)
none
c)
two or more
d)
how ever many makes sense.
27.
Which statement is an inference about this picture?
a)
The van is tan.
b)
The  van ran into KFC. 
c)
The driver was hungry. 
d)
Red and white are part of the KFC building. 
28.

Write 7.113 x 107 in standard form.

a)

71,130,000

b)

7,113,000

c)

0.0000007113

d)

7,113

29.
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
30.
Write 2.08 x 102  in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208
31.
Write 7.8 x 10-3  in standard form.
a)
0.0078
b)
7,800
c)
78
d)
0.078
32.
Write 8.73 x 10-4  in standard form.
a)
0.000873
b)
0.0873
c)
87,300
d)
8,730
33.
Write 6,700 in scientific notation.
a)
6.7 x 103
b)
6.7 x10-3
c)
67 x 102
d)
67 x 10-2
34.
Write 52,300,000 in scientific notation.
a)
5.23 x 107
b)
5.23 x 10-7
c)
52.3 x 106
d)
52.3 x 10-6
35.
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
36.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
37.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
38.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
39.
UNDERSTANDING
If the exponent is a positive number...
a)
you will get a large number
b)
you will get a smaller number
40.
UNDERSTANDING
If the exponent is a negative number...
a)
you will get a large number
b)
you will get a small number
41.
Which one of these is in scientific notation?
a)
8.987000
b)
8.98 x 106
c)
80.987 x 10
d)
8.986
42.
How many sig. fig. are in the number below:
106.00
a)
2
b)
3
c)
4
d)
5
43.
How many sig. fig. are in the number below:
0.056
a)
1
b)
2
c)
3
d)
4
44.
How many sig. fig. are in the number below:
100.5
a)
1
b)
2
c)
3
d)
4
45.
How many sig. fig. are in the number below:
0.678
a)
1
b)
2
c)
3
d)
4
46.
How many sig. fig. are in the number below:
0.0005
a)
1
b)
2
c)
3
d)
4
47.
How many sig. fig. are in the number below:
705000
a)
2
b)
3
c)
5
d)
6
48.
2.12 + 3.5
a)
5
b)
5.6
c)
5.62
d)
5.620
49.
9.845 - 6.5
a)
10
b)
3.3
c)
3.35
d)
3.345
50.
8-5
a)
3
b)
3.0
c)
3.00
d)
3.000
51.
25 * 5
a)
125
b)
120
c)
100
d)
130
52.
50 * 10
a)
500
b)
500.0
c)
5
d)
50
53.
24.4 / 2.2
a)
11.1
b)
11.09
c)
11
d)
11.091
54.

1000 x 12

a)

12,000

b)

10,000

c)

1

d)

12,000.0

55.
Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.
a)
1.0 m2
b)
1.1 m2
c)
1.0947 m2
d)
1.09 m2
56.
How many Significant Figures in the number below?
4,500
a)
3
b)
4
c)
2
d)
1
57.

Solve & Round to Correct Sig Figs.

4.5 x 2.34 =

a)

11

b)

10.52

c)

10.5

d)

1

58.

Compute and round properly

4.765 cm x 8.50 cm

a)

40.5025 cm2

b)

40.5 cm2

c)

40 cm2

59.
Compute and round properly
5.66 g ÷ 1.0 mL
a)
5.66 g/mL
b)
5.7 g/mL
c)
6 g/mL
d)
5.6 g/mL
60.
(2.3 x 102)+(4.1 x 102)=
a)
6.4 x 104
b)
6.4 x 102
c)
6.4 x 100
d)
.64 x 101
61.

5.5 mm + 5 mm = _______________ with the correct number of sig figs

a)

10.5

b)

10

c)

11

62.
The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?
a)
16.67%
b)
20%
c)
2500%
d)
80%
63.

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)

16%

b)

19%

c)

2.3%

d)

18%

64.
Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his percent error?
a)
35%
b)
67%
c)
85%
d)
92%
65.
The tool used to measure the mass of a substance or object is a ______________.
a)
balance
b)
graduated cylinder
c)
ruler
d)
thermometer
66.
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
67.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
68.
Which lab tool might you use to measure the volume of a liquid?
a)
electric scale
b)
bunsen burner
c)
test tube
d)
graduated cylinder
69.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
70.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
71.
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
72.
Which liquid has the highest density? 
a)
corn syrup
b)
lamp oil
c)
rubbing alcohol
d)
honey
73.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?
a)
13.3 g
b)
13.3 cm3
c)
.075 g
d)
1695 cm3
74.
The density of this material is 2 g/cm3.
There are 24 cm3  Find the total mass.
a)
12 grams
b)
48 grams
c)
12 g/cm3
d)
48 g/cm3
75.
This is a measurement of the amount of matter, or 'stuff', in an object or substance.
a)
volume
b)
density
c)
mass
d)
length
76.
Convert from meters to cm:  9 meters
a)
900 cm
b)
90 cm
c)
0.9 cm
d)
0.09 cm
77.
Convert 17 m to cm:
a)
0.17 cm
b)
0.017 cm
c)
1,700 cm
d)
170 cm
78.
Convert 8 kilometers to meters
a)
800 m
b)
80,000 m
c)
8,000 m
d)
.008 m
79.
Convert 5 cm to mm:
a)
5,000mm
b)
0.5 mm
c)
0.05 mm
d)
50 mm
80.

Which is equivalent to the following value:

2.5 x 10^-4 meters

a)

250 micrometers

b)

25 micrometers

c)

2.5 micrometers

d)

0.25 millimeters

81.

Which is equivalent to the following value:

0.0000000063 Liters

a)

6.3 nL

b)

63 nL

c)

630 nL

d)

0.63 microLiters

82.

10-12

a)

tera

b)

pico

c)

giga

d)

nano

83.
What is the correct SI unit for mass?
a)
Kilograms
b)
newtons
c)
pounds
d)
grams
84.
Convert 273 K to oC
a)
0oC
b)
100oC
c)
-273oC
d)
50oC
85.
Convert 300 K to oC
a)
27oC
b)
0oC
c)
-27oC
d)
573oC
86.
Convert -89 oC to K
a)
184K
b)
362K
c)
-362K
d)
-184K
87.
Convert 5900 K to oC
a)
6173 oC
b)
5627 oC
88.

Convert 180oC to K

a)

453 K

b)

-93 K

c)

93 K

d)

483 K

89.
Which is true about the molecules at 0 K?
a)
They are moving really fast
b)
They are moving really slowly
c)
There is no motion at 0 K
d)
All of the above are true

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