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WorksheetsIASB Invitational 2 Science
Total questions: 28
Worksheet time: 15mins
Name
Class
Date
1.
The general formula for alkanes is
_________.
_________.
a)
A.CnHn
b)
B. CnH2n+2
c)
C.CnH2n
d)
D.CnH2n-2
2.
Ecological succession is the term thatdescribes the _______.
a)
A.
progression of a sequence of
changing communities within an ecosystem
progression of a sequence of
changing communities within an ecosystem
b)
B.
evolution of species in an ecosystem over time
evolution of species in an ecosystem over time
c)
C.
replacing of one species by a morepowerful species in a particular habitat
replacing of one species by a morepowerful species in a particular habitat
d)
D. flow of energy within an ecosystem
3.
To pitch the nose of an airplane
upward, you must _________.
upward, you must _________.
a)
A. push the elevator down
b)
B.raise the elevator up
c)
C.push the rudder to the right
d)
D.push the rudder to the left
4.
As Marram begins to grow on the foredunes, it functions to _________.
a)
A.
stabilize the dune by holding the sands
togetherwith its long rhizomes and fast-growing stems
stabilize the dune by holding the sands
togetherwith its long rhizomes and fast-growing stems
b)
B.
destabilize the dune by the wedging action ofwide rhizomes in the shallow sands
destabilize the dune by the wedging action ofwide rhizomes in the shallow sands
c)
C.
remove a great deal of water from the dunethat only succulents and other desert-like survive
remove a great deal of water from the dunethat only succulents and other desert-like survive
d)
D.
serve as food for the herds of hoofed animalsinhabit the spaces in between the dunes
serve as food for the herds of hoofed animalsinhabit the spaces in between the dunes
5.
Which type of plastic would be most
useful in car engines with high
temperatures?
useful in car engines with high
temperatures?
a)
A.Thermoplastics
b)
B.Thermoset plastics
c)
C.Polypeptides
d)
D.Polymeric residuals
6.
An Indianapolis 500 race car can travel at
85 m/s around a curve with a radius of 350
meters. What speed would be possible if
the radius of the curve was increased to
400 meters?
85 m/s around a curve with a radius of 350
meters. What speed would be possible if
the radius of the curve was increased to
400 meters?
a)
A.
91 m/s
91 m/s
b)
B.
96 m/s
96 m/s
c)
C.
101 m/s
101 m/s
d)
D.
141 m/s
141 m/s
7.
The oxidation number of oxygen in
H2O2 is __________.
H2O2 is __________.
a)
A.0
b)
B.1-
c)
C.2-
d)
D.½-
8.
The majority of caves in Indiana have been formed in underlying beds of_________
a)
A.granite and dolostone
b)
B.sandstone and granite
c)
C.sandstone and shale
d)
D.limestone and dolostone
9.
To roll the airplane to the left (a
clockwise rotation when viewed from
the front) __________.
clockwise rotation when viewed from
the front) __________.
a)
A.both ailerons must be moved up
b)
B.
the right aileron moves up and the leftaileron moves down
the right aileron moves up and the leftaileron moves down
c)
C.
both ailerons must be moved up
both ailerons must be moved up
d)
D.
the left aileron moves up and theright aileron moves down
the left aileron moves up and theright aileron moves down
10.
In the Indiana Dunes, Marram grass and
Cottonwood would be considered among
the __________.
Cottonwood would be considered among
the __________.
a)
A.climax species
b)
B.late successional species
c)
C.
C. pioneer species
C. pioneer species
d)
D.members of the Oak Savanna community
11.
Taking off in a crosswind requires thepilot to use which surfaces to keep thewings level?
a)
A.ailerons
b)
B.elevators
c)
C.rudder
d)
D.all of the above
12.
Which of the following reactions is
NOT an oxidation-reduction reaction?
NOT an oxidation-reduction reaction?
a)
A.burning fuel
b)
B.rusting metal
c)
C.
single replacement reaction
single replacement reaction
d)
D.
production of a salt and waterfrom an acid and base
production of a salt and waterfrom an acid and base
13.
Which of the following processes isnormally used to change iron ore to ironmetal?
a)
A.
reduction using carbon or carbon dioxide
reduction using carbon or carbon dioxide
b)
B.thermal decomposition
c)
C.oxidation to the oxide
d)
D.electrolysis
14.
The most extensive and tallest dunes are foundalong the _______shores of Lake Michigan andhave been shaped predominantly by____.
a)
A.
western and southwestern;
winter storm and wave action
western and southwestern;
winter storm and wave action
b)
B.
western and southwestern;
winds from the northeast
western and southwestern;
winds from the northeast
c)
C.
eastern and southeastern;
winds from the northeast
eastern and southeastern;
winds from the northeast
d)
D.
eastern and southeastern;
winds from the northwest
eastern and southeastern;
winds from the northwest
15.
Steel can be made by adding which element to iron?
a)
A.Arsenic
b)
B.Boron
c)
C.Magnesium
d)
D.
Carbon
Carbon
16.
What airplane motion will occur with the elevator deflected down and the rudder deflected to the left?
a)
A.nose up and turn to the left
b)
B.nose up and turn to the right
c)
C.nose down and turn to the left
d)
D.nose down and turn to the right
17.
Which of the following methods is
used to prevent corrosion of iron and steel?
used to prevent corrosion of iron and steel?
a)
A.painting
b)
B.alloying with another metal
c)
C.cathodic protection
d)
D.all of the above
18.
You are spelunking in a southern Indiana caveand your light goes out. You bump into asomewhat conical, 1 meter tall speleothemrising up from the cave floor. This structure isprobably _____.
a)
A.a stalactite
b)
B.
a common structure known as
“Atlas Tooth”
a common structure known as
“Atlas Tooth”
c)
C.
an eroded remains of an ancient tree
an eroded remains of an ancient tree
d)
D.a stalagmite
19.
Half-cell reaction
Au3+ + 3e- ←➔ Au +1.50
Cu2+ + 2e- ←➔ Cu +0.34
Sn2+ + 2e- ←➔Sn - 0.14
Fe2+ + 2e- ←➔Fe - 0.41
Zn 2+ + 2e- ←➔Zn -0.76
Mg2+ + 2e- ←➔Mg -2.37
What is the cell potential of a voltaic cell in which Cu is oxidized to Cu2+ and Sn2+ is reduced to Sn?
Au3+ + 3e- ←➔ Au +1.50
Cu2+ + 2e- ←➔ Cu +0.34
Sn2+ + 2e- ←➔Sn - 0.14
Fe2+ + 2e- ←➔Fe - 0.41
Zn 2+ + 2e- ←➔Zn -0.76
Mg2+ + 2e- ←➔Mg -2.37
What is the cell potential of a voltaic cell in which Cu is oxidized to Cu2+ and Sn2+ is reduced to Sn?
a)
A.-0.20V
b)
B.+0.20V
c)
C.
-0.48V
-0.48V
d)
D.
+0.48V
+0.48V
20.
As one walks inland from the lake side
of the dunes, you would expect that
species diversity would ________.
of the dunes, you would expect that
species diversity would ________.
a)
A.increase and ecosystem stability to increase
b)
B.increase and ecosystem stability to decrease
c)
C.decrease and ecosystem stability to increase
d)
D.decrease and ecosystem stability to decrease
21.
The current record for completing the
Indianapolis 500 is 2 hours 40 minutes. What was the average
speed during the race?
Indianapolis 500 is 2 hours 40 minutes. What was the average
speed during the race?
a)
A.50 m/s
b)
B.74 m/s
c)
C.83.3 m/s
d)
D.100 m/s
22.
Which compounds can exist as
cis-trans geometric isomers?
cis-trans geometric isomers?
a)
A.Alkynes
b)
B.Alkenes
c)
C.Alkanes
d)
D.Aromatics
23.
The current record time for completingthe Indianapolis 500 race is 2 hours 40minutes. What would the record time be closest to, if the car could travel at a constant 100 m/s?
a)
A.2 hours 30 minutes
b)
B.2 hours 20 minutes
c)
C.2 hours 10 minutes
d)
D.
2 hours
2 hours
24.
With regards to caves, Indiana bats thatregularly hibernate in caves would beclassified as ________.
a)
A.trogloxenes
b)
B.troglophiles
c)
C.troglobites
d)
D.
troglophobes
troglophobes
25.
Au3+ + 3e- ←➔ Au +1.50
Cu2+ + 2e- ←➔ Cu +0.34
Sn2+ + 2e- ←➔Sn - 0.14
Fe2+ + 2e- ←➔Fe - 0.41
Zn 2+ + 2e- ←➔Zn -0.76
Mg2+ + 2e- ←➔Mg -2.37
A voltaic cell contains a strip of Zn metal in a solution of zinc ions in one half-cell. The other half-cell contains astrip of tin metal in a solution of tin ions. When this celloperates ________.
Cu2+ + 2e- ←➔ Cu +0.34
Sn2+ + 2e- ←➔Sn - 0.14
Fe2+ + 2e- ←➔Fe - 0.41
Zn 2+ + 2e- ←➔Zn -0.76
Mg2+ + 2e- ←➔Mg -2.37
A voltaic cell contains a strip of Zn metal in a solution of zinc ions in one half-cell. The other half-cell contains astrip of tin metal in a solution of tin ions. When this celloperates ________.
a)
A.Sn is oxidized and Zn2+ is reduced
b)
B.
Sn is reduced and Zn2+ is oxidized
Sn is reduced and Zn2+ is oxidized
c)
C.
Sn2+ is oxidized and Zn is reduced
Sn2+ is oxidized and Zn is reduced
d)
D.Sn2+ is reduced and Zn is oxidized
26.
The standard hydrogen electrode is
__________.
__________.
a)
A.hypothetical
b)
B.arbitrarily set at 0.0 v
c)
C.
neutral
neutral
d)
D.is basic
27.
The mineral compound that is mostabundant in limestone is ___________.
a)
A.calcium biphosphate
b)
B.silicon dioxide
c)
C.calcium carbonate
d)
D.
silicon calcite
silicon calcite
28.
Express 250 miles per hour in
meters/second.
meters/second.
a)
A.111 m/s
b)
B.400 m/s
c)
C.250 m/s
d)
D.
666 m/s
666 m/s
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