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Chapter 1 Test - Scientific Processes

Total questions: 30

Worksheet time: 3600secs

Name
Class
Date
1.

Why do we test one independent variable at a time?

a)

Because it is hard to setup a data table with more.

b)

To know what is causing the change, which helps us understand cause and effect.

c)

It is what has always been done.

d)

To gain an understanding as to why the experimenter changes the constants.

2.

The variable that is being measured or observed is called the _. Hint: this is the responding variable.

a)

independent variable

b)

dependent variable

c)

control variable

3.

What is a constant in an experiment?

a)

It's the variable that stays the same.

b)

It's the variable that the scientist changes on purpose in the experiment.

c)

It's the variable that is being measured in an experiment.

4.

If I ride my bicycle to school instead of walking, then I will get to school faster. What is the dependent variable?

a)

Riding a bicycle to school.

b)

The time it takes to get to school.

c)

Walking to school.

d)

The school.

5.

What is being changed on purpose in this experiment?

a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
d)

dependent variable

6.

Put the liquids in order from most dense (left) to least dense (right).

a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
7.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
8.
An irregularly shaped rock was lowered into a graduated cylinder holding a volume of water equal to 50 ml. The height of the water rose to 75 ml. If the mass of the stone was 250 g, what was its density?
a)
15 g/mL
b)
5 g/mL
c)
10 g/mL
d)
20 g/mL
9.

The density of a material is 2 g/cm3. The volume is 24 cm3 . What is the mass?

a)
12 grams
b)
48 grams
c)
12 g/cm3
d)
48 g/cm3
10.

There are 4 objects listed with their densities. Which of the following will float on water? (SELECT 2)

a)

Object A:

0.7 g/cm3

b)

Object B:

1.2 g/cm3

c)

Object C:

0.25 g/cm3

d)

Object D:

11.4 g/cm3

11.

What is the independent variable?

a)

atomic number

b)

electron volts

c)

first ionization energy

d)

Jim Askew's Graph

12.

Which type of graph is usually just a comparison of numbers?

a)

line graph

b)

bar graph

c)

circle graph

13.

Which is the graph most often used in science as it compares only two variables?

a)

line graph

b)

bar graph

c)

circle graph

14.

Julie took a survey. She asked her classmates, "What is your favorite place to swim in the summer?" She received the following responses: lake, pool, pool, lake, ocean, lake, pool, ocean, ocean, lake, pool, lake, ocean, pool, lake, pool, pool. Which table shows the data that Julie collected?

a)
b)
c)
d)
15.

What was the height of the plant at 4 weeks?

a)

18 cm

b)

19 cm

c)

20 cm

d)

22 cm

16.

Write 7.113 x 107 in standard form.

a)

71,130,000

b)

7,113,000

c)

0.0000007113

d)

7,113

17.
Write 2.08 x 102  in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208
18.
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
19.
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
20.
Arrange the numbers from least to greatest:
216,000,000 ; 2.2 x 103 ; 3.1 x 107 ; 310,000
a)
2.2 x 103 ; 310,000; 3.1 x 107 ; 216,000,000
b)
310,000 ; 2.2 x 103 ; 3.1 x 107; 216,000,000
c)
3.1 x 107 ; 310,000; 2.2 x 103; 216,000,000
d)
2.2 x 103 ; 3.1 x 107 ; 310,000 ; 216,000,000
21.
What is 98.907 rounded to 1 significant figure?
a)
98.9
b)
90
c)
100
d)
98.91
22.
How many significant figures does the following number have: 100.00210
a)
7
b)
5
c)
10
d)
8
23.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
24.

Determine the number of Significant Figures in 13,410,000 m.

a)

4

b)

3

c)

2

d)

1

25.
How many Significant Figures in the number below?
4.56 x 103
a)
5
b)
4
c)
6
d)
3
26.

How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 454 grams; 1 kg = 1000 g)

a)

1.10 kg

b)

78.5 kg

c)

110 kg

d)

78500 kg

27.

Which conversion factor would you use to convert from cm to inches?

(1 inch = 2.54 cm)

a)

1 in2.54 cm\frac{1\ in}{2.54\ cm}

b)

2.54 cm1 in\frac{2.54\ cm}{1\ in}

c)

2.54 in1 cm\frac{2.54\ in}{1\ cm}

d)

1 cm2.54 in\frac{1\ cm}{2.54\ in}  

28.
You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.
a)
25 mg
b)
25,000 mg
c)
250 mg
d)

2,500 mg

29.

How many yards are in 1 mile? (3 ft = 1 yd) (5280 ft = 1 mi)

a)

1,670 yds

b)

5,280 yds

c)

1,760 yds

d)

5,820 yds

30.
The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?  (3 ft=1 yd)
a)
0.867 ft
b)
7.8 ft
c)
8.07 ft
d)
8.27 ft

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