Title: Quiz: Module Six
Course: Manufacturing Math and Science > Section: Learning Modules

You can take the quiz as many times as you like, but only your last score will be recorded.

You can take the quiz as many times as you like, but only your last score will be recorded.

Q: For the inequality , x can be equal to 10.
- True
- False
A: False

Q: Write an algebraic expression for the following:

Nine decreased by a number times three.
A: (a choice with no text)

Q: Three times a number plus six equals three. What does the number equal?
- -1
- 1
- 2
- -2
A: -1

Q: Sevi makes twice as much per hour as Felipe but only works half as long. If Sevi made $360 last week, how much did Felipe make?
- $360
- $720
- $180
- $540
A: $360

Q: Mona is 22 years older than her daughter. Her age now is four years less than twice her daughter's age. How old is Mona now?
- 48
- 26
- 44
- 36
A: 48

Q: Juan worked 40 hours last week and earned $420. His employer just gave him a 50 cent per hour raise. How much will he make if he works 38 hours this week?
- 418
- 440
- 399
- 439
A: 418

Q: Carlos's pasture is twice as wide as it is long. He needs 1500 yards of fencing to completely enclose the pasture. How long is the shorter side of the pasture?
- 250
- 300
- 400
- 500
A: 250

Q: Mimi's rent goes up by 25 dollars every year. In eight years she will be paying one quarter more than she currently is. How much is she paying now?
- 800
- 1000
- 600
- 750
A: 800

Q: The scrapyard is paying .50 cents per pound for scrap. Today Sheila made twice as much as she did yesterday selling scrap. And, over the course of the two days, she has made a total of $192. How many pounds of scrap did she bring in the first day?
- 128
- 256
- 64
- 96
A: 128

Q: At one job, Dean makes four dollars per hour more than he does at his other job. This week, he worked 20 more hours at the lower-paying job than he did at the higher paying one. In total, he brought home 680 dollars for working 60 hours. How much does he get paid per hour at his higher paying job?
- $14
- $10
- $12
- $16
A: $14

Q: The selection below is used under the Creative Commons Attribution NonCommercial ShareAlike license. You can get to the original content by going here. Use the selection to answer the question below.

In physics a scalar quantity has only magnitude (numerical value): distance (30 miles) and speed (30 mph) are two examples of scalar quantities. We use the term vector to describe quantities that have both magnitude and direction. Vectors are represented by arrows: (displacement) 30 miles due west, (velocity) 30 mph due west, are two examples of vectors.

Which statement below describes a vector quantity?
- An SUV moving at 40 km/h east
- A race car moving at 110 mph
- A turtle strolling at 200 cm/min
- A wagon heading west
A: An SUV moving at 40 km/h east

Q: The question below is used under the Creative Commons Attribution NonCommercial ShareAlike license. You can get to the original content by going here.

Pacific loggerhead sea turtles migrate over 7,500 miles (12,000 km) between nesting beaches in Japan and feeding grounds off the coast of Mexico. If the average speed of a loggerhead is about 45 km/day, how long does it take for it to complete the distance of a one-way migration?
- 267 days
- 167 days
- 200 days
- 133 days
A: 267 days

Q: The selection below is used under the Creative Commons Attribution NonCommercial ShareAlike license. You can get to the original content by going here.

Velocity is a measure of both speed and direction of motion. A change in velocity is called acceleration.

A racecar that is racing on a straight road for starts from a stopped positions and increases his velocity to 60 m/s in three seconds. He then decreases his velocity to 40 m/s for the next second and maintains that velocity for the next second (see the data table below for his velocity).

Time (s) | Velocity (m/s)
0 | 0
1 | 20
2 | 40
3 | 60
4 | 40
5 | 40

What is the racecar's acceleration in the third second in meters per second squared?
- 20
- -20
- 0
- 60
A: 20

Q: The selection below is used under the Creative Commons Attribution NonCommercial ShareAlike license. You can get to the original content by going here.

Velocity is a measure of both speed and direction of motion. A change in velocity is called acceleration.

A racecar that is racing on a straight road for starts from a stopped positions and increases his velocity to 60 m/s in three seconds. He then decreases his velocity to 40 m/s for the next second and maintains that velocity for the next second (see the data table below for his velocity).

Time (s) | Velocity (m/s)
0 | 0
1 | 20
2 | 40
3 | 60
4 | 40
5 | 40

What is the racecar's acceleration in the fourth second in meters per second squared?
- -20
- 20
- 0
- 40
A: -20

Q: If you pour water, vegetable oil, honey, and milk into a column, the liquids will settle into different layers. Vegetable oil will be on the top, followed by water. Milk will be next with honey on the bottom. If you put a tablespoon full of milk into the settled column, what would happen?
- The tablespoon of milk will eventually drop through the oil and water and settle in the milk.
- The tablespoon of milk will sit on top of the oil layer.
- The tablespoon of milk will mix together with the water, creating a slightly discolored liquid.
- The tablespoon of milk will end up settling to the bottom of the column.
A: The tablespoon of milk will eventually drop through the oil and water and settle in the milk.

Q: Use the portion of the periodic table below to answer the question. The atomic number, which is the number of protons in an element, is at the top. Next, is the element's symbol and name. At the bottom is the element's average atomic mass.

Element 1 | Element 2 | Element 3 | Element 4 | Element 5
5

B

Boron

10.81
6

C

Carbon

12.011
7

N

Nitrogen

14.007
8

O

Oxygen

15.999
9

F

Fluorine

18.998

Based on the table above, what is true about Nitrogen?
- Fluorine
- Oxygen
- Nitrogen
- Boron
- Carbon
A: Fluorine

Q: Use the portion of the periodic table below to answer the question. The atomic number, which is the number of protons in an element, is at the top. Next, is the element's symbol and name. At the bottom is the element's average atomic mass.

Element 1 | Element 2 | Element 3 | Element 4 | Element 5
5

B

Boron

10.81
6

C

Carbon

12.011
7

N

Nitrogen

14.007
8

O

Oxygen

15.999
9

F

Fluorine

18.998

Based on the table above, what is true about Nitrogen?
- It has seven protons.
- It has an atomic mass of seven.
- It has 7.007 electrons on average.
- It is the most noble element in the table.
A: It has seven protons.

Q: Use the selection below to answer the question at the end.

This selection uses material from the Wikipedia article "Metal," which is released under the Creative Commons Attribution-Share-Alike License 3.0.

An alloy is a mixture of two or more elements in which the main component is a metal. Most pure metals are either too soft, brittle or chemically reactive for practical use. Combining different ratios of metals as alloys modifies the properties of pure metals to produce desirable characteristics. The aim of making alloys is generally to make them less brittle, harder, resistant to corrosion, or have a more desirable color and luster. Of all the metallic alloys in use today, the alloys of iron (steel, stainless steel, cast iron, tool steel, alloy steel) make up the largest proportion both by quantity and commercial value. Iron alloyed with various proportions of carbon gives low, mid and high carbon steels, with increasing carbon levels reducing ductility and toughness. The addition of silicon will produce cast irons, while the addition of chromium, nickel and molybdenum to carbon steels (more than 10%) results in stainless steels.

Other significant metallic alloys are those of aluminium, titanium, copper and magnesium. Copper alloys have been known since prehistory—bronze gave the Bronze Age its name—and have many applications today, most importantly in electrical wiring. The alloys of the other three metals have been developed relatively recently; due to their chemical reactivity they require electrolytic extraction processes. The alloys of aluminium, titanium and magnesium are valued for their high strength-to-weight ratios; magnesium can also provide electromagnetic shielding[citation needed]. These materials are ideal for situations where high strength-to-weight ratio is more important than material cost, such as in aerospace and some automotive applications.

Question:

Based on the information above what can we surmise about copper alloys?
- They are good at conducting electricity.
- They are stronger than other alloys.
- They can be used to form stainless steel.
- They have high strength-to-weight ratios.
A: They are good at conducting electricity.

Q: Use the selection below to answer the question at the end.

This selection uses material from the Wikipedia article "Metal," which is released under the Creative Commons Attribution-Share-Alike License 3.0.

An alloy is a mixture of two or more elements in which the main component is a metal. Most pure metals are either too soft, brittle or chemically reactive for practical use. Combining different ratios of metals as alloys modifies the properties of pure metals to produce desirable characteristics. The aim of making alloys is generally to make them less brittle, harder, resistant to corrosion, or have a more desirable color and luster. Of all the metallic alloys in use today, the alloys of iron (steel, stainless steel, cast iron, tool steel, alloy steel) make up the largest proportion both by quantity and commercial value. Iron alloyed with various proportions of carbon gives low, mid and high carbon steels, with increasing carbon levels reducing ductility and toughness. The addition of silicon will produce cast irons, while the addition of chromium, nickel and molybdenum to carbon steels (more than 10%) results in stainless steels.

Other significant metallic alloys are those of aluminium, titanium, copper and magnesium. Copper alloys have been known since prehistory—bronze gave the Bronze Age its name—and have many applications today, most importantly in electrical wiring. The alloys of the other three metals have been developed relatively recently; due to their chemical reactivity they require electrolytic extraction processes. The alloys of aluminium, titanium and magnesium are valued for their high strength-to-weight ratios; magnesium can also provide electromagnetic shielding[citation needed]. These materials are ideal for situations where high strength-to-weight ratio is more important than material cost, such as in aerospace and some automotive applications.

Question:

Based on the information above, what would you use if you wanted something that was very light, but also strong?
- an alloy of magnesium, aluminum, and titanium
- stainless steel
- an alloy of copper
- iron alloyed with carbon
A: an alloy of magnesium, aluminum, and titanium

Q: Use the selection below to answer the question at the end.

This selection uses material from the Wikipedia article "Metal," which is released under the Creative Commons Attribution-Share-Alike License 3.0.

Demand for metals is closely linked to economic growth. During the 20th century, the variety of metals uses in society grew rapidly. Today, the development of major nations, such as China and India, and advances in technologies, are fuelling ever more demand. The result is that mining activities are expanding, and more and more of the world's metal stocks are above ground in use, rather than below ground as unused reserves. An example is the in-use stock of copper. Between 1932 and 1999, copper in use in the USA rose from 73g to 238g per person.

Metals are inherently recyclable, so in principle, can be used over and over again, minimizing these negative environmental impacts and saving energy at the same time. For example, 95% of the energy used to make aluminium from bauxite ore is saved by using recycled material. However, levels of metals recycling are generally low. In 2010, the International Resource Panel, hosted by the United Nations Environment Programme (UNEP) published reports on metal stocks that exist within society and their recycling rates.

The report authors observed that the metal stocks in society can serve as huge mines above ground. However, they warned that the recycling rates of some rare metals used in applications such as mobile phones, battery packs for hybrid cars and fuel cells are so low that unless future end-of-life recycling rates are dramatically stepped up these critical metals will become unavailable for use in modern technology.

Question:

Based on the information in the selection above, what is the most likely reason more metal is not recycled?
- It is cheaper to mine more metal than it is to recycle it.
- We have such an abundance of metal that recycling is not necessary.
- The technology does not exist to recycle metal.
- Demand for metal is dropping across society.
A: It is cheaper to mine more metal than it is to recycle it.