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Mod 1: The Central Science

Total questions: 77

Worksheet time: 2hrs 15mins

Name
Class
Date
1.

The branch of science that studies what "Stuff" is made of and how it interacts with other "Stuff".

a)

STEM

b)

Biology

c)

Chemistry

d)

Engineering

2.

Anything that has mass and takes up space

a)

Atom

b)

Matter

c)

Proton

d)

Element

3.

The smallest building block of all matter in the universe.

a)

Atom

b)

Matter

c)

Proton

d)

Element

4.

Studies chemicals, matter and its properties, and atoms in order to understand how elements join together to form different substances.

a)

Scientist

b)

Chemist

c)

Einstein

d)

Chemical Engineer

5.

We see chemistry in action in our lives when we...

a)

Bake cookies

b)

Take medicine

c)

Wash our clothes

d)

All of the above

6.
You know that 12 inches = 1 foot.  Convert 60 inches to feet.
a)
720 feet
b)
5 feet
c)
5 inches
d)
72 feet
7.
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
8.

How many inches are in 1 mile? (5280ft = 1mi; 12in = 1ft)

a)

66330in

b)

63360in

c)

63660in

d)

63066in

9.
A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?
a)
24 Weeks
b)
24-ounce bottle
c)
10.6 Weeks
d)
10.6-ounce bottle
10.
The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?
a)
32 People
b)
32 Min.
c)
12.5 Min.
d)
12.5 People
11.

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

12.

How many minutes are in a school year, 187 days?

a)

269,280 min.

b)

16, 200 min.

c)

16, 156 min.

d)

269,000 min.

13.

A child weighs 40.0 lb and is to receive 0.10 mg of an antibiotic for each kg of body weight. How many milligrams of the antibiotic shall the child receive? (1 kg = 2.2 lbs)

a)

18.2 mg

b)

182 mg

c)

0.182 mg

d)

1.82 mg

14.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
15.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
16.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
17.
How many significant figures: 1000 mL
a)
1
b)
2
c)
3
d)
4
18.
How many significant figures: 100.000 cL
a)
1
b)
3
c)
5
d)
6
19.
How many significant figures: 0.001 g
a)
4
b)
3
c)
2
d)
1
20.

Writing in scientific notation:

a)

decimal goes behind the first non-zero, exponent is the number of times the decimal moves, + exponent for >1, - exponent for <1

b)

decimal goes behind the second non-zero, exponent is the number of times the decimal moves, + exponent for >1, - exponent for <1

c)

decimal goes behind the second non-zero, exponent is the number of times the decimal moves, + exponent for <1, - exponent for >1

21.

The correct scientific notation for this number is: 67,400,000

a)

6.74 x 107

b)

67.4 x 106

c)

6.74 x 10-7

d)

674 x 105

22.

The correct scientific notation is: 0.000044

a)

4.4 x 105

b)

44 x 104

c)

44 x 10-4

d)

4.4 x 10-5

23.

The expanded form of 3.4 x 104 is

a)

0.00034

b)

340

c)

3400

d)

34000

24.

The expanded form for 5.64 x 10-1 is?

a)

56.4

b)

0.564

c)

564

d)

0.0564

25.

The rules for the correct number to report when calculating is

a)

the number on my calculator

b)

the least number of sig figs for both adding/subtracting and multiplying/dividing

c)

the least number digits behind the decimal for adding/subtracting; least number of sig figs for multiplying/dividing

d)

the least number of sig figs for adding/subtracting; least number of digits behind the decimal for multiplying/dividing

26.

Solve. Round using SigFig math rules.

98.7°C - 97.25°C

a)

1°C

b)

1.5°C

c)

1.45°C

d)

1.450°C

27.
Find the sum 3.35 + 1.4 + 3.65
a)
8.9
b)
8.22
c)
8.43
d)
8.4
28.
Solve & Round to Correct Sig Figs.
4.5 x 2.34 = 
a)
11
b)
10.52
c)
10.5
d)
10
29.
Solve & Round to Correct Sig Figs.
100 / 2 = 
a)
50
b)
50.
c)
50.0
d)
50.00
30.

What is the correct answer according to sig fig rules:

.005612 x .40145 =

a)

.0022

b)

.00225

c)

.002252

d)

.002253

31.
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
32.
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
33.

Which SI unit is used to measure length?

a)

mol

b)

m

c)

kg

d)

m2

34.

Which SI unit is used to measure mass?

a)

s

b)

m

c)

kg

d)

Pa

35.

Which SI unit is used to measure temperature?

a)

K

b)

s

c)

mol

d)

N

36.

When converting between SI prefixes, what should you do if you are moving from smaller to larger units?

a)

move the decimal to the left

b)

move the decimal to the right

c)

do not move the decimal

d)

use dimensional analysis

37.

What will happen if you forget to put units on your answer on the test tomorrow?

a)

I will get full credit

b)

I will lose points

38.
What prefix is represented by the following symbol:  k
a)
hecto
b)
kilo
c)
deci
d)
deka
39.

What is the proper SI unit for volume?

a)

cm3

b)

m

c)

g

d)

L

40.
There are _______ grams in 1 kilogram
a)
1
b)
10
c)
100
d)
1000
41.

What would you use to measure the mass of this?

a)

Grams

b)

Kilograms

42.

The metric system is based or scaled on units of:

a)

ten

b)

100

c)

1000

d)

inches

43.
Convert 6.52 kg to grams
a)
6520 g
b)
652 g
c)
65.2 g
d)
0.652 g
44.
To measure the length of a Kleenex box you would use __?__.
a)
kilometers (km)
b)
meters (m)
c)
dekameters (dam)
d)
centimeters (cm)
45.
Why do objects sink or float in H2O? 
a)
Because their densities are higher or lower than compared to water
b)
Because their densities are using gravity to pull down
c)
Because their densities are heavier or lighter
d)
Because their mass and volumes are equal 
46.
How does the mass of a bowling ball on Earth compare to its mass on the moon?
a)
The mass will be greater on the moon
b)
The mass will be less on the moon
c)
The mass will stay the same
47.

Material of density of 762 kg/m3 occupies a container volume of 99 cm3. What is its mass?

Hint: density = mass/volume

a)

75438 kg

b)

7.70 kg

c)

0.13 kg

d)

6858 kg

48.

If 96.5 grams of gold has a volume of 5 cm3 , what is the density of gold?

Hint: density = mass/volume

a)

482.5 g/cm3

b)

19.3 g/cm3

c)

0.05 g/cm3

d)

101.5 g/cm3

49.

If the density of a diamond is 3.5 g/cm3 , what would be the mass of a diamond whose volume is .5 cm3?

Hint: density = mass/volume

a)

1.75 g

b)

7 g

c)

0.14 g

d)

4 g

50.

The density of pine is generally about 0.5 g/cm3 . What is the mass of a 800 cm3 piece of pine?

Hint: density = mass/volume

a)

0.000625 g

b)

1600 g

c)

400 g

d)

16000 g

51.
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
52.

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

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

53.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
54.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
55.
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%
56.
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%
57.

Which is the more precise measurement?

a)

4 mL

b)

4.3 mL

c)

4.30 mL

d)

4.300 mL

58.
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
59.
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
60.
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
61.

Joe tells Gabby his theory about why sea turtles nest on the beach instead of in the ocean. He says, “The turtle eggs would sink to the bottom of the ocean, and the baby turtle would drown. I know this because my uncle is a fisherman, and he told me this information. Gabby tells Joe that his theory is not scientific. Why does Joe’s idea not meet the requirements to be a scientific theory?

a)

Joe’s idea is already a scientific law.

b)

Joe’s idea is not supported by scientific evidence.

c)

Joe’s idea is a good guess that can be tested by experiments.

d)

Joe and his uncle are not scientists.

62.

In 1897, Joseph Thomson discovered that atoms contained electrons. He proposed a change in the atomic theory of that time, and the theory was modified because of his discovery. Since Thomson’s discovery, atomic theory has been further modified. What is the best explanation for why scientific theories are modified?

a)

Theories more than ten years old are usually out of date.

b)

Scientists want to prove that the work of other scientists is wrong.

c)

New evidence that supports a change prompts scientists to modify earlier theories.

d)

So much information is available today that it is harder to focus research and disprove theories.

63.

Lilly was trying to explain to her friend the difference between a theory and a law in science. She used the theory of plate tectonics and the law of superposition as examples. Lilli explained the difference by using non-scientific language. Which statement could Lilly use to correctly describe the difference between a theory and a law in science?

a)

A theory describes a natural event, while a law explains it.

b)

A theory explains a natural event, while a law predicts it.

c)

A theory explains a natural event, while a law describes it.

d)

A theory predicts a natural event, while a law explains it.

64.
Scientific theories are based on
a)
general assumptions of how systems work.
b)
mathematical principles that can be proven true.
c)
large amounts of data collected over time.
d)
observations from within only one scientific discipline.
65.

Which of these can change when new evidence is presented?

a)

theory

b)

law

66.

Which of these explain how a natural phenomenon works or happens?

a)

theory

b)

law

67.

Which of these describes a natural phenomenon or relationship that always occurs under specific conditions

a)

theory

b)

law

68.

Which of these can be represented mathematically and provide no explanation why a phenomenon occurs?

a)

theory

b)

law

69.
The variable the is changed on purpose is..
a)
Constant
b)
Control
c)
Independent Variable
d)
Dependent Variable
70.
The variable that is being tested, counted, or measured and is responding to the independent variable is known as 
a)
Control
b)
Constant
c)
Independent Variable
d)
Dependent Variable
71.
Its one of the independent variables that is use for comparison, does not get any change, original or plain variable.
a)
Constant
b)
Control
c)
Independent Variable
d)
Dependent Variable
72.

A dice has cube shaped and the side length is 
2 mm. What will be the volume?

a)

8 mm3mm^3  

b)

4  mm3mm^3  

c)

10 mm3mm^3 

73.
What is derived quantities ?
a)
a tendency to do nothing or to remain unchanged.
b)
combination of two or more base quantities
c)
the quantity of motion of a moving body, measured as a product of its mass and velocity.
74.

Convert

 100oC100^oC  to Kelvin

a)

 373 K373\ K  

b)

 273 K273\ K  

c)

 212 K212\ K  

d)

 0 K0\ K  

75.

Convert

 450 K450\ K  to Celsius

a)

 723oC723^oC  

b)

 277oC277^oC  

c)

 177 oC177\ ^oC  

d)

 623oC623^oC  

76.

Convert

 300 K300\ K  to Celsius

a)

 573oC573^oC  

b)

 37oC37^oC  

c)

 27oC27^oC  

d)

 600oC600^oC  

77.

Convert

 0oC0^oC  to Kelvin

a)

 −273 K-273\ K  

b)

 273 K273\ K  

c)

 32 K32\ K  

d)

 −32 K-32\ K  

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