What is the force of gravity on a 500-N woman standing on Earth’s surface?
A) 50 N
B) 250 N
C) 500 N
D) 598 N
E) 5000 N
Answer:
Because a white dwarf is no longer burning fuel, it is more accurately described as
being a
A) stellar remnant.
B) failed star.
C) protostar.
D) black elf.
Answer:
Which of the following could be represented by a physical model?
A) a cell
B) an atom
C) rationality
D) ecosystem
E) both A and B
Answer:
Which has the greatest number of molecules?
A) 28 g of nitrogen,
B) 32 g of oxygen,
C) 32 g of methane, C
D) 38 g of fluorine,
Answer:
Tornadoes are rapidly rotating winds that blow counterclockwise around a small area of
intense
A) high pressure.
B) low pressure.
Answer:
Which of the following compounds is likely to have the best water solubility?
A) CH3CH2OH
B) CH3CH2CH2CH2OH
C) CH3CH2CH2CH2CH2CH2OH
D) CH3CH2CH2CH2CH2CH2CH2CH2OH
Answer:
An airplane flies at 40 m/s at an altitude of 50 m. The pilot drops a heavy package that
falls to the ground below. Neglecting air resistance, the package will land
A) beneath the plane.
B) 400 m behind the plane.
C) 500 m behind the plane.
D) more than 500 m behind the plane.
E) none of the above
Answer:
When rock is subjected to compressive force, it may fault. If rocks in the hanging wall
are pushed up over rocks in the footwall, it is called a
A) reverse fault.
B) strike slip fault.
C) normal fault.
D) none of the above
Answer:
Symbols on a weather map are called
A) isobars.
B) data.
C) weather elements.
D) weather codes.
Answer:
Melting and freezing are
A) changes of phase.
B) opposite processes.
C) both of these
D) neither of these
Answer:
Which of the following elements are in the same group as silicon (Si)?
A) C
B) P
C) As
D) B
E) none of the above
Answer:
An explosion occurs 34 km away. For sound that travels at 340 m/s, you’ll hear the
explosion in
A) 0.1 s.
B) 1 s.
C) 10 s.
D) 20 s.
E) more than 20 s.
Answer:
Changes in Earth’s history are recorded
A) in the rock record.
B) in magnetic tape at the bottom of the oceans.
C) by rocks at the Library of Congress.
D) Moon rocks.
Answer:
Snow converts to glacial ice when subjected to
A) decreasing temperature.
B) pressure.
C) basal sliding.
D) plastic deformation.
Answer:
What is the number of moles of H2O produced if you combust 0.5 mole of CH4
according to the following balanced equation?
CH4 + 2 O2 → CO2 + 2 H2O
A) 2 moles
B) 4 moles
C) 6 moles
D) 8 moles
E) 1 mole
Answer:
Greta and her family float higher in the dense water of the Dead Sea because
A) less volume of water is displaced.
B) more volume of water is displaced.
C) of a greater buoyant force.
Answer:
How many structural isomers are shown here?
A) one
B) two
C) three
D) four
Answer:
A hunter fires a bullet from a horizontallyheld rifle while simultaneously dropping
another bullet from the side of the rifle. The bullet to hit the ground first is
A) the dropped one.
B) the fired one.
C) both hit at the same time
Answer:
What is the formula mass of a molecule of C6H12O6?
A) 180 amu
B) 24 amu
C) 29 amu
D) 168 amu
E) none of the above
Answer:
Which of the following is a positive ion?
A) Na+1
B) Ca+2
C) Mg+2
D) Al+3
E) all of the above
Answer:
Temperature differences between nighttime and daytime on Earth are relatively small
due to
A) polar regions absorbing most solar energy.
B) Earth being 70% water.
C) Earth’s relatively high daily spin rate and shortness of nighttime.
D) seasonal fluctuations and Earths magnetic field.
Answer:
A person on the ground floor of a skyscraper ages
A) faster than a person on the top floor.
B) slower than a person on the top floor.
C) at the same speed as a person on the top floor.
Answer:
If you mix a typical iodine ion (I, atomic no. = 53) with a typical barium ion (Ba,
atomic no. = 56), what compound is formed?
A) BaI2
B) BaI
C) Ba56I53
D) Ba2I
E) Ba2I2
Answer:
Comets orbit about the
A) Sun.
B) Moon.
C) Earth.
D) all of these
E) none of these
Answer:
Which is the latest stage of a star?
A) Helium collects within the core.
B) Carbon collects within the core.
C) The surface of the star expands into a red giant.
D) The star contracts into a blue giant.
Answer:
If the relative mass of a pingpong ball is 1/20 that of a golf ball, how many golf balls
would you need to equal the mass of 200 pingpong balls?
A) 10
B) 200
C) 100
D) 20
E) 6.022 1023
Answer:
Earth’s magnetic field affects cosmic rays by
A) deflecting them.
B) slowing their speeds.
C) destroying them.
D) absorbing them.
Answer:
Work is done by gravity on a bowling ball that rolls
A) along a horizontal surface.
B) on a sloped surface.
C) both of these
D) none of the above
Answer:
The final phase of Pangaea’s break-up was the split of
A) Antarctica from Australia, and North America and Greenland from Europe.
B) South America from Africa, and Antarctica/Australia from India/Madagascar.
C) Antarctica from Australia, North America from Europe, and Europe from Asia.
D) Africa from Antarctica/Australia, and India/Madagascar from Asia.
Answer:
To scale, if Earth were the size of a basketball, then the Moon would be about
A) 5 feet away.
B) 10 feet away.
C) 20 feet away.
D) 80 feet away.
Answer:
In some instances electromagnetic radiation behaves like a wave. In other instances
electromagnetic radiation behaves more like a particle. Which behavior more accurately
describes the true nature of electromagnetic radiation?
A) Particle behavior more accurately describes the true nature of electromagnetic
radiation.
B) Electromagnetic radiation behaves both as a wave or as a particle depending on the
circumstance.
C) Wave behavior more accurately describes the true nature of electromagnetic
radiation.
D) There is no circumstance in which electromagnetic radiation can be described as
either portraying particle or wave behavior.
Answer: