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Final Review
40 multiple-choice
questions based on the
following slides
Final review
A cannonball is fired horizontally from a cannon at the
same time that another cannonball is dropped from the
same height as the gun(air resistance is neglected).
Will they hit the ground at the same time?
YES!
Why? Their vertical accelerations are the same.
What if the masses of the two cannonballs are not the
same, will they hit the ground at the same time?
YES!
Final review
An astronaut measures the mass and length of a sub-sandwich
before taking it on a flight to Mars.
While travelling at a speed near the speed of light, the astronaut
measures the mass and length of the sub-sandwich again.
Will either the mass or length change?
No!
Why? The two measurements were made in the same reference frame.
Final review
The basic difference between red and green light viewed
in a vacuum is that…
The wavelengths are not the same and....
green light has more energy.
Final review
Which of the following chemical equations is properly
balanced?
a) H2 + O2  H2O
b) H2 + 2O2  H2O
c) 2H2 + O2  2 H2O
H
H
H
H
+
O
O

H
H
O
H
O
H
Final review
The number of valence electrons in sulfur (S) is
6
Final review
The control rods in a nuclear fission reactor can increase
the energy production of the reactor by what
n
n
n
n
n
n n n n
Increase the number of free neutrons in the
core.
Final review
Our understanding of the interior structure of the earth is primarily
determined from
Measuring waves produced by earthquakes on the other side
Final review
The geological age of the earth is estimated to be 4.55
billion years by using
Radiometric dating
Final review
The final state of the Sun will be a
White dwarf
Final review
What is the considered the best evidence for an expanding
universe?
Red shift of far away galaxies
Final review
Which two of the four fundamental forces do
we deal with most in our daily lives?
Final review
Besides fitting together like puzzle pieces, what are some
major evidences for plate tectonics and Pangaea?
1.
2.
3.
4.
5.
Magnetic field consistencies
Paleoclimatic consistencies
Glacier tracks consistencies
Volcano and earthquake patterns
Fossil occurances
Final review
A sample starts with 100% of a certain isotope
at noon. At 6pm on the same day, the sample is
down to 12.5%.
What is the half-life of this sample?
That means at 2pm it was 50%
…and at 4pm it was 25%
so the half-life is 2 hours
Final review
T/F: It is impossible for humans to change the chemical
composition of the earth's atmosphere.
False
Final review
What is one empirical evidence for
anthropogenic contributions to climate change?
Hockey stick graphs
Final review
What greenhouse gas is most abundant?
H 2O
Final review
Which are the correct three radioactive particles
and which one can penetrate matter the most?
Alpha
Beta
Gamma
Final review
What is most dangerous
about a radioactive
isotope?
concentration
Curie’s per square kilometer
Final review
What element is in abundance within the Sun that will
allow it to live another 5 billion years?
Hydrogen
Nuclear energy. Mass
Which has more mass?
a.
b.
c.
d.
A proton by itself
A proton in an Iron nucleus
A proton in a Helium nucleus
An electron in a hydrogen atom
Final review
The major difference in the molecular structure
of saturated and unsaturated fats is
Kinks
Final review
What’s true about our solar system?
Is the sun in the center of the Milky Way galaxy?
Final review
What exactly makes Pluto not a planet?
It does not clear its orbit…
Final review
 A red star and a blue star have the same apparent brightness.
What can you conclude about their distances away from
you?
The red star is closer
Final review
 What is the name of the diagram with the
color/temperature relation in the main sequence of stars?
The Hertzsprung-Russell diagram
Final review
 Sagittarius A* is a
Super-massive black hole at the center of the Milky Way galaxy
Final review
 What happens to a star with a mass above 1.4 solar masses?
It eventually creates at least a Type Ia supernova.
Final review
 The expansion of the universe is moving galaxies away from
each other, but what is happening within the galaxies?
They are not expanding themselves…
Final review
According to the Hubble ultra-deep field, about how old is the
universe?
13.75 Billion Years old
Final review
Only 4% of the universe is matter that is familiar to us, i.e.
atoms. What is the rest made of ?
How to read a nutrition label
How many servings of this food product contains enough energy to raise 240,000 g
of water by 1 °C?
Fish that swim in the cold north Atlantic would
have what type of fatty acid in their blood?
A.
B.
C.
D.
Saturated fatty acids
Unsaturated fatty acids
Triglycerides
Salty Fatty acids
Which group of fatty acids has the most
hydrogen?
Which one is a Trans-Fatty Acid?
Final review
What is true about the periodic table?
Groups 1 and 17 are very reactive
Group 18 is very un-reactive
Which of these minerals do you think
contains a transition metal and why?
Biotite mica
Muscovite mica
What two fundamental forces combine to
make this shape for nuclei formation?
Energy
Distance between nucleons
What nuclear process is this?
What is the estimated age earth and how
do we postulate it?
A. 13.7 billion yrs, Uranium-Lead dating
B. 4.5 billion yrs, Various radiometric dating methods
C. 4.5 million yrs, Carbon dating
D. 6,000 yrs, Archbishop James Usher
Why do optical telescopes work better
when they are in space?
10 Short answer
questions based on the
following slides
Half Life
 What is the Half Life of this radioactive sample(Hint:
use the axis/box drawing method)?
Certain types of seismic waves will not propagate through the
outer core. This is convincing evidence that the outer core is
a) Molten or liquid
b) Metallic
c) Composed primarily of oxides, silicates, and
other minerals
d) Exactly located at the center of the earth
e) Very dense
State 3 other pieces of evidence for
Pangaea/plate tectonics
1.
2.
3.
4.
The puzzle piece evidence
_____________________
_____________________
_____________________
Which feature is the oldest and why?
A
C
D
B
What are these famous graphs called?
Name one natural cause of climate change
What part of the electromagnetic spectrum allows us to look into
the center of the Milky-Way?
What is true about the moon?
A.
B.
C.
D.
E.
We always see the same side
Its orbital period is the same as
the Earth’s about the sun
It rotates around its own axis
faster than it orbits Earth
It is not in hydrostatic
equilibrium
The temperature ranges from
90 to 370 Fahrenheit.
Name one method used to measure
astronomical distances.
Quiz: Three main sequence stars have different colors, but
the same brightness. Which one is closest to the Earth?
1.
2.
3.
4.
The bluest one
The reddest one
The yellowest one
Impossible to tell
from color
A very massive star (more than 10 times the size of
our sun) becomes what at the very end of its life?
a) Black hole
b) Neutron star
c) White dwarf
d) Pulsar
e) Red giant
Name one piece of experimental evidence
in support of general relativity.