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Unit 3 Review PLTW

Total questions: 40

Worksheet time: 54mins

Name
Class
Date
1.
Which of these best completes the conversions below?
1 kg = ? g
1 m  = ? cm
a)
1 kg = 1000 g
1 m  = 100 cm
b)
1 kg = 0.001 g
1 m  = 0.01 cm
c)
1 kg = 100 g
1 m  = 10 cm
d)
1 kg = 0.01 g
  1 m = 0.001 cm
2.
Convert 12 km to m
a)
120 m
b)
1,200 m
c)
12,000 m
d)
120,000 m
3.

What SI unit is used to measure length?

a)

meters

b)

liters

c)

centimeters

d)

kilograms

4.
a)
8
b)
8.0
c)
8.01
d)
8.010
5.
Is this picture accuracy or precision?
a)
Just accuracy
b)
Just precision
c)
Both
d)
Neither
6.
Is this picture accuracy or precision?
a)
Just accuracy
b)
Just precision
c)
Both
d)
Neither
7.
"m" is a unit of __________
a)
Mass
b)
Weight
c)
Length
d)
Time
8.
"kg" is a unit of _____
a)
Weight
b)
Mass
c)
Length
d)
Volume
9.
When a measurement is repeatable and consistent it is said to have...
a)
High precision
b)
Low precision
c)
High accuracy
d)
Low accuracy
10.
What does the symbol "R" stand for?
a)
Radius
b)
Circles
c)
Arc
d)
Diameter
11.

Dimensions should reflect actual size of the object, not the scaled size.

a)

True

b)

False

12.

Overall dimensions should include the three principle dimensions:

a)

Length, height, sides

b)

Height, width, depth

c)

Front, side, top

d)

Top, left, bottom

13.

Overall dimensions should be placed the greatest distance away from the object so that intermediate dimensions can nest _________to the object.

a)

Behind

b)

Next to

c)

Closer

d)

Under

14.

Do not include _____________ dimensions.

a)

Random

b)

Latin

c)

Silly

d)

Unnecessary

15.

Why is the dimension guideline incorrect in this picture?

a)

The dimensions are duplicated.

b)

The view is incorrect.

c)

You should not dimension hidden lines.

d)

The extension lines are not dimensioned.

16.
Identify the population:  A survey of 500 adults in the U.S. found that 54% drink coffee daily.
a)
Collection of the 500 adults surveyed 
b)
Collection of all adults in the U.S.
c)
54% 
d)
500
17.
Lizzy had test scores of:   72, 94, 108, 60
What is the RANGE of her test scores?
a)
12
b)
72
c)
48
d)
98
18.
What is the mode in this set of numbers:
7, 14, 20, 3, 7, 14, 2, 14, 7
a)
7
b)
20
c)
7 & 14
d)
none of the above
19.

Find the median from the list of numbers:

60, 58, 52, 48, 60, 67

a)

58

b)

59

c)

60

d)

118

20.
Find the mean of these numbers:
5,11,2,12,4,2
a)
4.1
b)
6
c)
4.5
d)
4
21.
Find the median of these numbers:
4,2,7,4,3
a)
2
b)
5
c)
7
d)
4
22.
The height of three basketball players is 210 cm, 220 cm and 191 cm.
What is their average height?
a)
210
b)
207
c)
220
d)
200
23.
What is the maximum value?
a)
58
b)
66
c)
64
d)
60
24.
What is the range?
a)
average
b)
biggest-smallest
c)
the middle #
d)
# happening the most
25.
A data set can have more than one mode
a)
True
b)
False
26.
A data set can have more than one median?
a)
True
b)
False
27.

Is the first step in the design process. Includes the problem being identified, validated, and justified. The design requirements are determined and the design brief is created.

a)

prototype

b)

Valid

c)

define the problem

d)

present solution

e)

construct/test prototype

28.
This step in Design process includes researching past solutions and brainstorming possible new solutions. Selecting an approach using a Decision Matrix.
a)
generate concepts
b)
Justifiable
c)
Brainstorm
d)
Iterative
e)
evaluate solution
29.

This step in Design process includes creating a detailed design solution and detailed technical drawings.

a)

present solution

b)

define the problem

c)

Valid

d)

Prototype

e)

develop solution

30.
This is the last step in the Design process and is when the project portfolio is shared usually during a formal presentation.
a)
present solution
b)
construct/test prototype
c)
generate concepts
d)
Justifiable
e)
Brainstorm
31.
Which view is also known as a 3D view?
a)
Top View
b)
Isometric View
c)
Right View
d)
Left View
32.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
33.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
34.
Write in scientific notation:
93149
a)
9.3149 x 104
b)
9.3149 x 10-4
c)
9.3149 x 10-3
d)
9.3149 x 103
35.
Write in scientific notation:
0.00071363
a)
7.1363 x 10-3
b)
7.1363 x 10-4
c)
7.1363 x 104
d)
7.1363 x 103
36.
How is acid rain formed?
a)
Carbon monoxide and carbon dioxide mix with water in the ocean.
b)
Carbon dioxide and oxygen mix with water in the air.
c)
Sulfur dioxide and carbon monoxide mix with lake water.
d)
Sulfur dioxide and nitrogen oxide mix with water in the air.
37.
What is the greenhouse effect?
a)
warming of the earth due to gases in our atmosphere.
b)
cooling of the earth due to gases in our atmosphere
38.
The enhanced greenhouse effect leads to global warming.
a)
True
b)
False
39.

Agriculture is responsible for both land and water pollution.

a)

True

b)

False

40.

There is nothing we can do to stop water pollution.

a)

True

b)

False

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