Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
How long does it take for Earth to revolve around the Sun?
A) one day
B) one week
C) one month
D) one year
Answer:
When Paul compresses air with a tire pump, the temperature of the compressed air
A) drops.
B) remains unchanged.
C) increases as work is done on it.
D) none of the above
Answer:
What is the sum of the atomic masses of all the atoms in sucrose, ?
A) 342 amu
B) 182 amu
C) 270 amu
D) none of the above
Answer:
Most rock-forming minerals are members of the group called
A) silicates.
B) carbonates.
C) sulfates.
D) oxides.
Answer:
Earth's atmosphere is similar to the panes of glass in a greenhouse, it allows the Sun's
A) short-wavelength radiation to enter, but blocks long-wavelength terrestrial radiation
from leaving.
B) infrared light radiation to enter, and prevents the short-wavelengths from leaving.
C) ultraviolet light to enter, and prevents the infrared light from leaving.
D) infrared light to enter, and blocks the visible terrestrial light from leaving.
Answer:
A freely-falling object has a speed of 30 m/s at one instant. Exactly 2 seconds later its
speed will be
A) the same.
B) 40 m/s.
C) 50 m/s.
D) more than 50 m/s.
Answer:
In a solution of 77 percent nitrogen and 23 percent oxygen, which is the solvent?
A) nitrogen
B) oxygen
C) both
D) neither
E) Gases cannot form solutions.
Answer:
The first minerals to crystallize are those having the
A) higher melting point.
B) lower melting point.
C) higher pressure.
D) lower pressure.
Answer:
Which of the following statements about strong or weak bases is true?
A) A weak base completely separates into ions in water.
B) A weak base will not react with a strong acid.
C) A strong base is always corrosive.
D) A strong base will readily accept protons from even weak acids.
Answer:
Humans see best in the yellow-green region of the spectrum. So the efficiency of
sodium yellow-green lamps that illuminate highways is
A) higher.
B) lower.
C) not affected.
Answer:
A ball is thrown horizontally from the top of a tall cliff. Three seconds later, the ball has
fallen a vertical distance of
A) 20 m.
B) 30 m.
C) 45 m.
D) depends on the initial horizontal speed of the ball
Answer:
The image below shows a beam of radiation passing between two electrically charged
plates.
Which of the beams is actually composed of particles?
A) a
B) b
C) c
D) a and c
E) all of the above
Answer:
A common 5-L metal can will float in air if it is
A) evacuated of air.
B) filled with a very large amount of helium.
C) thrown high enough into the air.
D) Nonsense! Unless the can and displaced air weigh the same, the can can't float in air.
Answer:
Circulation of the ocean's surface water results from
A) blowing wind and frictional force.
B) the Coriolis effect.
C) the pressure gradient force.
D) frictional force from winds, along with the pressure gradient and Coriolis forces.
Answer:
Bronco's speed increases after he dives from a hovering helicopter. Relative to an
observer in the helicopter Bronco's momentum
A) also increases.
B) remains unchanged.
C) decreases.
Answer:
The process of crystallization enriches a magma in
A) silica.
B) minerals that have low melting points.
C) silica and other minerals that have low melting points.
D) all of the above.
Answer:
A car that travels twice as fast as another car when braking to a stop will skid
A) twice as far.
B) four times as far.
C) depends on the mass of the cars.
Answer:
Point bars typically form
A) on the inside bend of a curved stream channel.
B) on the outside bend of a curved stream channel.
C) in the middle of a straight stream channel.
D) in the middle of a curved stream channel.
Answer:
When work is done on a system while additional heat is subtracted, the temperature of
the system
A) increases.
B) decreases.
C) remains unchanged.
D) need more information
Answer:
Which of the following substances contains ions?
A)
B)
C)
D)
E) all of the above
Answer:
A 2-kg mass that weighs 20 N has 40 J of potential energy relative to the ground. What
is its height?
A) 1 m
B) 2 m
C) 3 m
D) 4 m
E) none of the above
Answer:
An infrared thermometer operates by way of
A) temperature differences.
B) radiant energy invisible to humans.
C) conduction, convection, and radiation.
D) none of the above
Answer:
A 1-kg block of iron weighs about
A) 1 N.
B) 5 N.
C) 10 N.
D) more than 10 N.
Answer:
The period of the second hand on a clock is
A) 1 s.
B) 1/60 s.
C) 60 s.
D) 3600 s.
E) 12 h.
Answer:
Which of the following statements about electrochemistry is not true?
A) It is the study of how electrical energy and chemical reactions are related.
B) It involves the use of a set of oxidation-reduction reactions to produce electrical
current.
C) It involves the use of electrical current to produce an oxidation-reduction reaction.
D) It is the study of how electrons are transferred from one chemical compound to
another.
E) All of the above are true.
Answer:
Which of the following would be considered a physical property?
A) density
B) flammability
C) corrosion resistance
D) reactivity towards acid
E) oxygen sensitivity
Answer:
Which of the following is not true of the fossil record?
A) The fossil record spans 3 billion years of Earth's 4.6 billion year age.
B) The most common fossils are from organisms that had hard parts like shells and
bones.
C) Similar to present day stromatolites, the first fossils were simple, anaerobic algal
plants.
D) The Paleozoic era is credited with the emergence of life.
Answer:
Wind is generated in response to
A) temperature differences only.
B) pressure differences only.
C) the unequal heating of Earth's surface only.
D) temperature and pressure differences, and the unequal heating of Earth's surface.
Answer:
The metamorphism of coal to anthracite occurs due to
A) high pressure and high temperature.
B) high temperatures.
C) contact metamorphism.
D) crystallization of organic matter.
Answer:
Sound travels fastest in
A) water vapor.
B) water.
C) ice.
D) same in all
Answer:
Strings that have more mass on a musical instrument than others produce notes of
A) higher frequency.
B) lower frequency.
C) the same frequency.
Answer:
If you lie on a bed of nails your back will encounter pressure due to contact with the
nails. Nail pressure on your back will be less if the bed has
A) fewer nails.
B) more nails.
C) both of the above
D) none of the above
Answer:
Compared to the amount of current that flows from a battery and into a circuit, the
amount of current that returns to the battery is
A) less.
B) the same.
C) greater.
D) dependent on the internal resistance of the battery.
Answer:
