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SCIN 101 Exam 1 Quiz Stats

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Question Answer Wrong Answers
What percentage of the world’s energy does North America use? 25%
84.4%
75%
0%
5%
3.1%
100%
0%
Which of the following is a non-renewable resource? uranium
81.3%
water
0%
wind
0%
biomass
6.3%
If you push on a bike, then the reaction force to this is The force of the bike upon you
81.3%
The weight of the bike
3.1%
The friction force on the tires
6.3%
The acceleration of the bike
0%
According to historians oil production peaked in the 1970s. The marked what event? The end of 'cheap oil'
81.3%
The end of oil usage around the world.
0%
The end of oil as an energy source.
3.1%
The depletion of all oil reserves.
6.3%
If a population is growing at 5% per year, what type of growth is this? Exponential
78.1%
Linear
9.4%
No growth
0%
Logarithmic
0%
Which of the following is an alternate energy source? Biomass
78.1%
Oil
6.3%
Nuclear
3.1%
Coal
0%
How much kinetic energy does a stationary object have? 0
75%
Depends on its mass
9.4%
9.81 J
3.1%
100 J
0%
A force applied to an object will always cause the object to None of the above
75%
Speed up
0%
Accelerate
3.1%
Change its momentum
12.5%
Which is NOT a property of a scientific law? It provides an explanation
75%
It describes a fundamental relationship in nature.
3.1%
It describes an event which has occurred repeatedly
3.1%
It describes an event which occurs in nature.
9.4%
Which of the following is a unit of energy Joule
75%
Watt
9.4%
Newton/sec
0%
Horsepower
3.1%
If a population is growing at 5% per year, what type of growth is this? Exponential
75%
Linear
0%
No growth
0%
Logarithmic
12.5%
The net force required to move a body at a constant velocity through outer space is Zero
75%
Its weight
0%
The force of gravity
3.1%
Is mass times its velocity
9.4%
Which of the following statements is true (only one): Oil use has expanded more than any other fuel since 1940.
71.9%
The growth rate of energy consumption has kept pace with GNP growth.
9.4%
We reached the point last year where we imported no oil.
9.4%
Electricity use has actually fallen since 1975.
0%
How many significant figures are in 23.001? 5
71.9%
2
6.3%
3
6.3%
4
6.3%
If the growth rate of the number of solar collectors is 7% per year, then 1000 units in use in 2010 will grow to _______ units by the year 2040. 8000
71.9%
1200
6.3%
2000
6.3%
4000
6.3%
The cost of running a set of eight 100 watt light bulbs for 6 hours, with the cost of electricity at 9¢ per kWh, is approximately 43¢
68.8%
6.3%
24¢
0%
54¢
15.6%
When discussing energy resources, what does the resource reserve represent The amount which can be recovered profitably
68.8%
The amount that is currently being used
6.3%
The amount which is being imported
0%
The amount which is needed for the future
18.8%
What quantity is being plotted here? Energy intensity
68.8%
Energy cost
3.1%
Energy profit
6.3%
Energy usage per capita
12.5%
A ball rolls back and forth on the track as shown. What is the potential energy at position A relative to that at position B? It is greater at A than at B
68.8%
It is less at A than at B
15.6%
It is equal at A to that at B
6.3%
What percentage of coal is being used in the transportation sector in the US? 0%
62.5%
90%
6.3%
21%
15.6%
84%
3.1%
If a constant non-zero force is applied to an object, its velocity will certainly ________. Change
59.4%
Stop
0%
Be zero
21.9%
Be constant
6.3%
The “nose-cracker” moves as shown. The kinetic energy will be greatest at what point? B
56.3%
A
12.5%
C
6.3%
They are all equal
12.5%
The most significant aspect of world consumption of energy over the last 40 years has been the ________. expanding use of oil
56.3%
growth of nuclear power
18.8%
increased use of coal
9.4%
emphasis on energy conservation
3.1%
Which is NOT an important feature of a hypothesis? It is provable
53.1%
It is testable.
21.9%
It is a plausible explanation.
9.4%
It can be subjected to experimentation.
6.3%
Power is defined as The amount of energy divided by the time
53.1%
The energy used times the time
0%
The work done times the distance moved
6.3%
The energy divided by the work
31.3%

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