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Worksheets10 Gen Week 4
Total questions: 122
Worksheet time: 4hrs 4mins
Steel generally speaking is made of
iron and carbon
copper and iron
tin and carbon
aluminum and nickel
Brass is an alloy made of
copper and zinc
copper and tin
copper and nickel
copper and aluminum
Bronze is an alloy made of
aluminum and magnesium
copper and tin
lead and tin
copper and nickel
Alloy that can be used for jewellery, machine bearings, and door furniture
brass
bronze
pewter
duralumin
Bicycle parts are normally made of this alloy
duralumin
bronze
brass
pewter
Which of the following is a property of high carbon steel?
Low strength
High ductility
High hardness
Low wear resistance
What is the primary application of malleable cast iron?
Construction materials
Automobiles
Electrical wiring
Pipes
Match the property to its use
Good conductor of electricity
Used for electrical wired
Lightweight and strong
Ideal for aeroplanes
Resistant to corrosion
Perfect for outdoor structures
Lustrous and attractive
Used in jewellery
Strong and dense
Commonly used in building materials
Alloys are materials made when other (a) Are added to metals
Organize these options into the right categories
Alloys are important materials, they are made by combining (a) With (b) . Alloys (c) The properties of its (d) To give the desired (e)
Select the correct combination of metals to create an alloy that is strong, dense and unreactive (a) (b)
Select the correct combination of metals to create an alloy that conducts electricity and is low density (a) (b)
In a pure metal, the particles are arranged in (a) .
Pure iron is _________________ .
soft and weak
hard and stong
bendy and brittle
Bronze is an alloy of copper and _____.
Steel
Iron
Tin
Carbon
The main element present in brass and bronze is
copper
lead
zinc
tin
Which of the following alloy is used to make the body of an aeroplane?
Brass
Duralumin
Steel
Pewter
Alloy is a ...
A chemical compound with combination between metal and non-metal
A salt contain of two or more elements where the main element is non-metal
Mixture of two or more elements where the main element is metal
Which of the following alloys is used to make the instrument in Diagram 3?
Copper
Bronze
Steel
Brass
All metal elements melt at the same boiling point.
True
False
Why do jewelers not create jewelry with pure gold, silver, or copper?
It is a soft metal, so it will rub or scratch away over time.
It will not be shiny.
It is impossible to find a pure form of these metals.
It is too hard to shape into a design.
Which of the following are alloys? (choose 3)
Lead
Bronze
Brass
Aluminium
Stainless Steel
Atoms in pure metal are aranged in orderly manner.
True
False
Foreign atoms in alloy prevent...
The atom layer from easily slide over another
The atom layer break their bond easily
Why is a different metal added to an alloy?
It becomes less rigid
It becomes more shiny
It has different properties to the parent metal
It gets very hot
What is the problem with steel?
It rusts
It is very soft
It is less rigid
It is less shiny
What happens when gold is alloyed with copper?
It becomes less soft
It becomes more bendable
It becomes more shiny
It becomes less rigid
‘Bronze is harder than copper’. Which of the following is the best to explain the statement?
Atoms in bronze are arranged closely packed and less empty spaces.
Layers of atoms in bronze are not easily slide over each other.
Atomic size of copper and tin is different.
Bronze is a mixture of copper and tin
Which of the following statements below is true?
Copper is more ductile than brass
Brass is more malleable than copper
Iron is shinier than stainless steel
Iron is more resistant to corrosion than steel
An industrial product is made by adding chromium and carbon to iron. The product produced is
I. more malleable than iron
II. more resistant to corrosion than iron
III. is shinier than iron
IV. is harder than iron
II and IV
I, II and III
II, III and IV
I, II, II and IV
What is the purpose of annealing in heat treatment?
The purpose of annealing in heat treatment is to increase the melting point of metals.
The purpose of annealing in heat treatment is to remove impurities from metals.
The purpose of annealing in heat treatment is to soften metals and improve their ductility, toughness, and machinability.
The purpose of annealing in heat treatment is to harden metals and make them more brittle.
Which heat treatment process involves heating a metal to a specific temperature and then cooling it slowly in a furnace?
annealing
normalizing
tempering
hardening
What is the purpose of tempering in heat treatment?
To decrease the toughness of the steel.
To increase the hardness of the steel.
To prevent the steel from rusting.
To improve toughness and ductility of hardened steel.
What is the effect of annealing on the hardness of a metal?
Annealing increases the hardness of a metal.
Annealing has no effect on the hardness of a metal.
Annealing makes the metal brittle.
Annealing reduces the hardness of a metal.
Which heat treatment process is used to reduce internal stresses in a metal?
normalising
hardening
annealing
tempering
Which heat treatment process essentially 'factory resets' a metal's properties?
normalising
hardening
annealing
tempering
Define heat treatment process
controlled heating of metals to alter their mechanical properties without changing the product’s shape
controlled heating and cooling of metals to alter their mechanical properties without changing the product’s shape
controlled cooling of metals to alter their mechanical properties without changing the product’s shape
"controlled heating and cooling of metals to alter their mechanical properties and changing the product’s shape"
Alloys can only contain metals
True
False
Which of the following are alloys? (choose 3)
Lead
Bronze
Brass
Aluminium
Stainless Steel
Which metal is commonly used for Cutting tools, drills, ball bearings?
Tin
Lead
high Carbon steel
Stainless steel
Which metal is commonly used for Cutlery, kitchen sinks, door handles?
Tin
Lead
Aluminium
Stainless steel
Which metal is commonly used for Coating steel food cans, solder?
Tin
Lead
Aluminium
Copper
When a metal is heated up and cooled slowly, this is called...
Annealing
Tempering
Quenching
Work hardening
An alloy contains
Only metal atoms
Metal atoms and atoms of one or more different elements
Metal and non-metal atoms only
Only non-metal atoms
Steel is an alloy containing
Iron and copper
Carbon and iron
Aluminium and iron
Iron and calcium
Fast cooling of metals results in
Larger metal crystals and thus a softer, more malleable metal
Smaller metal crystals and thus a harder, more brittle metal
Larger metal crystals and thus a harder, more brittle metal
Smaller metal crystals and thus a softer, more malleable metal
Brass is an alloy made from
Copper and zinc
Silver and copper
Iron and carbon
Copper and silver
how to increase hardness of steel
by doing annealing
by doing quenching
by doing normalizing
by doing full annealing
Definition of heat treatment of steel
controlled heating and cooling of metals
alter their physical and mechanical properties
performed after metals undergo metal work such as cold roll, drawing, extrusion and etc
causes the material properties of metals change
What is the carbon content limit in steel?
3.0%
0.5%
2.5%
1.7%
By making a metal into an alloy, it becomes
stronger and softer
softer and harder
stronger and harder
softer and brittle
Why alloy is stronger than individual metals?
brcause alloy contains diamond
because layers can slide easily
because layers can not slide easily
because metals contain graphite
What is the composition of stainless steel?
Iron, lead, nickel
Iron, nickel, copper
Iron, nickel, zinc
Iron, nickel, chromium
Which metal would be suitable for all of the following uses?
# Making aircraft bodies
# Making food containers
# Making overhead power cables
aluminium
mild steel
gold
pure iron
Which two elements make up mild steel?
aluminium and magnesium
iron and carbon
copper and zinc
tin and lead
Which object is least likely to contain aluminium?
a bicycle frame
a saucepan
a hammer
an aeroplane body
Which property do all metals have?
Their boiling points are low.
Their densities are low.
They conduct electricity.
They react with water.
What is not a property of a metal?
Ductile
Sonorous
Malleable
Low melting point
Name the metal which is in liquid state.
Iron
Mercury
Zinc
Aluminium
Allows heat or electricity to go through
insulator
conductor
luster
ductile
Able to be drawn into wire is
malleable
insulator
luster
ductile
Able to be beaten or hammered into shapes
luster
malleable
brittle
insulator
The shine on metal when light falls on it.
luster
brittle
malleable
tarnish
Which properties of metal makes it a good choice to make a cooking pot out of? Choose TWO
it has luster - it is shiny
it is a good conductor of heat
it is ductile - able to be made into a wire
it has a high melting point
Which property of metal makes it a good choice to make a car engine from?
it has luster
it has a high melting point
it conducts electricity
it has magnetism
Why wouldn't you want a coffee cup to be made from metal?
metal conducts electricity
metal conducts heat
metals have luster
metals can be made into a wire; they are ductile
Which is NOT a property of most metals?
they have a very high melting point
they are not good at conducting electricity
they are good conductors of heat
they have luster
Why are cords for toasters, televisions, and phone chargers made of metal wires?
metals are shiny
metals are good conductors of heat
metals are good conductors of electricity
metals are magnetic
Why is there always a plastic or rubber covering on wires for things that we plug in to electrical outlets?
because the wire is made of metal and metals conduct electricity, so it would shock you
to cover up the luster of the metal that the wire is made from
to make sure it doesn't attract to a magnet
so it won't get bent
Which product would most likely be made of metal?
legs on a chair
a purse
a notebook
a coffee cup
Why are pots and pans made out of metal?
because metals have luster
because metals are heavy
because metals conduct heat
because metals conduct electricity
Why are soda cans made out of the metal aluminum?
because aluminum is shiny
because aluminum corrodes
because aluminum is malleable, so it can be hammered in a thin sheet
because aluminum is ductile - it can be made into a thin wire.
ALL metals are magnetic.
true
false
Which statement about metals is true?
most metals have a VERY high melting point
most metals can float in water
most metals are not shiny
most metals can melt in your oven
Most metals are solid at room temperature
False
True
The vertical axis of a line graph is called the __________.
slope
line of best fit
x-axis
y-axis
A ____________ shows the overall trend of all the data taken in an experiment.
line of best fit
slope
position
direction
A line graph shows how changes in a independent variable correspond to changes in a dependent variable.
true
false
You can use a _______to show how the independent variable changes in response to the dependent variable.
table
bar graph
line graph
circle graph
What is an independent variable?
the variable that changes because another variable changes
independent variables are only found on pie charts.
a variable most often found on the y-axis
the variable the experimenter changes or manipulates.
You have been asked to make a graph which represents everyone's favorite video game system in your class. Which type of graph would work best?
line
bar
circle
table
What is a dependent variable?
the variable the experimenter changes or manipulates.
the variable that changes because another variable changes
independent variables are only found on pie charts
a variable most often found on the x-axis
What is a data table?
Is a visual tool that uses that uses bars to compare data among categories
Used to compare the parts of a whole
Any display of information in tabular form, with rows and or columns named
Is a visual tool that uses that uses lines to compare data among categories
Which best describes a bar graph?
Any factor, trait, or condition that can exist in differing amounts or types
Useful for displaying data or information that changes continuously over time
Is a visual tool that uses that uses bars to compare data among categories
Any display of information in tabular form, with rows and or columns named
Based on the graph, how many more students are in the science club than the book club?
20
16
46
18
The graph shows how employees at Disney World travel to work. How many employees ride bikes, ride the bus, or walk to work?
300
450
325
375
The bar graph shows data about the pets owned by math students in four classes. One bar is missing from the graph. If the students have a total of 32 dogs, which bar shows the number of dogs Ms. Davalos's class has?
Did more people own a Wii or a PS3?
Wii
PS3
What is the difference in the number of people who owned a Wii and the number who owned a Gameboy?
4
7
3
2
Which month had the greatest number of books read?
November
December
January
February
Which month had the fewest books read?
January
February
March
April
Which month had the biggest difference between the high and low temperatures?
January
April
October
November
An outlier is..
a number that is repeated the most in the data.
a number that is the highest in the data.
a number that is the lowest in the data.
a number that is either much greater than or less than any other numbers in the data.
The number of teachers at four schools are shown in the bar graph below. The number of teachers at school S is missing. There are a total of 56 teachers at schools S, T and V. Which bar graph represents the number of teachers at school S?
