final review 40 multiple-choice questions based on the following slides
TRANSCRIPT
Final Review
40 multiple-choice questions based on the following slides
Final reviewA 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).
What if the masses of the two cannonballs are not the same, will they hit the ground at the
same time?
Will they hit the ground at the same time?
YES!
YES!
Why? Their vertical accelerations are the same.
Final reviewAn astronaut measures the mass and length of a sub-sandwich before taking it on a flight to Mars.
Will either the mass or length change?
No!Why? The two measurements were made in the same reference
frame.
While travelling at a speed near the speed of light, the astronaut measures the mass and length of the sub-sandwich again.
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
HO
H
HO
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
nn
n n
n
nn
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
Which two of the four fundamental forces do we deal with most in our daily lives?
Final review
Final review
Besides fitting together like puzzle pieces, what are some major evidences for plate tectonics and Pangaea?
1. Magnetic field consistencies2. Paleoclimatic consistencies3. Glacier tracks consistencies4. Volcano and earthquake patterns5. 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%
so the half-life is 2 hours
…and at 4pm it was 25%
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?
OH2
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. A proton by itselfb. A proton in an Iron nucleusc. A proton in a Helium nucleusd. 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. Saturated fatty acidsB. Unsaturated fatty acidsC. TriglyceridesD. Salty Fatty acids
Which group of fatty acids has the most hydrogen?
A
B
Which one is a Trans-Fatty Acid?
A
B
C
Final review
What is true about the periodic table?
Groups 1 and 17 are very reactive
Group 18 is very un-reactive
Biotite micaMuscovite mica
Which of these minerals do you think contains a transition metal and why?
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 datingB. 4.5 billion yrs, Various radiometric dating
methodsC. 4.5 million yrs, Carbon datingD. 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. The puzzle piece evidence2. _____________________3. _____________________4. _____________________
Which feature is the oldest and why?
A
B
C
D
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. We always see the same side
B. Its orbital period is the same as the Earth’s about the sun
C. It rotates around its own axis faster than it orbits Earth
D. It is not in hydrostatic equilibrium
E. 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. The bluest one2. The reddest one3. The yellowest
one4. 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 holeb) Neutron starc) White dwarfd) Pulsare) Red giant
Name one piece of experimental evidence in support of general relativity.