A weather balloon with a 2-meter diameter at
ambient temperature holds 525 grams of
helium. What type of electronic probe could be
used to determine the pressure inside the
balloon?
A barometric
B thermometric
C calorimetric
D spectrophotometric
A barometric
100
A student divides several cubes into two groups,
based on whether or not each cube can float in
water. What property is the student using to
classify the cubes?
A weight
B density
C conductivity
D mass
B
density
100
A galaxy is best described as a cluster of
A hundreds of stars.
B thousands of stars.
C millions of stars.
D billions of stars.
D
billions of stars.
100
What do the elements sulfur (S), nitrogen (N),
phosphorus (P), and bromine (Br) have in
common?
A They are noble (inert) gases.
B They are nonmetals.
C They have the same thermal conductivity.
D They have the same number of protons.
B
They are nonmetals.
100
What characteristic of carbon (C) makes it
essential to living organisms?
A Carbon forms crystal structures under
certain conditions.
B Carbon can exist as a solid, liquid, or gas.
C Carbon bonds in many ways with itself to
form chains.
D Carbon exists in radioactive forms.
C
Carbon bonds in many ways with itself to
form chains.
200
1 Two students were testing the amount of
fertilizer that would best promote the growth
of strawberries in a garden. Which of the
following could be an unavoidable source
of experimental error?
A length of the study
B variation in the strawberry plants
C the cost of watering the plants
D fertilization during the study
B variation in the strawberry plants
200
How much time will it take for a person to walk
the length of a football field (100 yards) at a
constant speed of 5 ft ?
s
A 20 seconds
B 33 seconds
C 60 seconds
D 166 seconds
C 60 seconds
200
To express the distance between the Milky Way
galaxy and other galaxies, the most appropriate
unit of measurement is the
A meter.
B kilometer.
C light-year.
D astronomical unit.
C
light-year.
200
Copper (Cu) reacts with oxygen (O) to form
copper oxide (CuO). The properties of CuO are
most likely
A different from copper or oxygen.
B similar to both copper and oxygen.
C similar only to copper.
D similar only to oxygen.
A
different from copper or oxygen.
200
Which of the following forms of energy
is released or absorbed in most chemical
reactions?
A light energy
B electrical energy
C sound energy
D heat energy
D heat energy
300
A force of 5 N is required to increase the speed
m m of a box from a rate of 1.0 to 3 0. within
s s
5 s along a level surface. What change would
most likely require additional force to produce
the same results?
A reduce the mass of the box
B increase the mass of the box
C make the surfaces of the box smooth
D make the surface of the floor smooth
B increase the mass of the box
300
A force of 5 N is required to increase the speed
m m of a box from a rate of 1.0 to 3 0. within
s s
5 s along a level surface. What change would
most likely require additional force to produce
the same results?
A reduce the mass of the box
B increase the mass of the box
C make the surfaces of the box smooth
D make the surface of the floor smooth
B increase the mass of the box
300
Which of the following sets contains only objects
that shine as a result of reflected light?
A moons, planets, and comets
B moons, comets, and stars
C planets, stars, and comets
D planets, stars, and moons
A
moons, planets, and comets
300
Which class of elements best conducts
electricity?
A metals
B nonmetals
C semimetals
D noble (inert) gases
A
metals
300
Which of the following compounds is most likely
to be part of living organisms?
A C H6 12O6
B BF3
C MoCl2
D CsI
A
C H6 12O6
400
A ball is dropped from the top of a tall building.
As the ball falls, the upward force of air
resistance becomes equal to the downward pull
of gravity. When these two forces become equal
in magnitude, the ball will
A flatten due to the forces.
B fall at a constant speed.
C continue to speed up.
D slow to a stop.
B fall at a constant speed.
400
How much time is required for a bicycle to
travel a distance of 100 m at an average speed
of 2 m ?
s
A 0.02 s
B 50 s
C 100 s
D 200 s
B 50 s
400
An object composed mainly of ice is orbiting
the Sun in an elliptical path. This object is most
likely
A a planet.
B an asteroid.
C a meteor.
D a comet.
D
a comet.
400
Copper (Cu) reacts with oxygen (O) to form
copper oxide (CuO). The properties of CuO are
most likely
A different from copper or oxygen.
B similar to both copper and oxygen.
C similar only to copper.
D similar only to oxygen.
A different from copper or oxygen.
400
A scientist observed changes in the gas pressure
of one mole of a gas in a sealed chamber
with a fixed volume. To identify the source
of the changes, the scientist should check for
variations in the
A air pressure outside the chamber.
B molecular formula of the gas.
C temperature of the chamber.
D isotopes of the gas.
C temperature of the chamber.
500
When magnesium (Mg) metal is burned in
the presence of oxygen (O2 ), magnesium
oxide (MgO) is produced. The properties
of magnesium oxide are different than the
individual properties of magnesium and
oxygen because magnesium oxide is
A a solution.
B a mixture.
C a compound.
D an element.
C a compound.
500
A ball is dropped from the top of a tall building.
As the ball falls, the upward force of air
resistance becomes equal to the downward pull
of gravity. When these two forces become equal
in magnitude, the ball will
A flatten due to the forces.
B fall at a constant speed.
C continue to speed up.
D slow to a stop.
B fall at a constant speed.
500
A day on Saturn takes about 10 Earth hours.
Which fact would best explain this short day?
A Saturn is less dense than Earth.
B Saturn is much farther from the Sun than
Earth.
C Saturn rotates more rapidly than Earth.
D Saturn’s orbit has greater eccentricity than
Earth’s.
C Saturn rotates more rapidly than Earth.
500
Which of the following is found farthest from
the center of an atom?
A nucleus
B proton
C neutron
D electron
D electron
500
Potassium hydroxide (KOH) is a strong base
because it
A easily releases hydroxide ions.
B does not dissolve in water.
C reacts to form salt crystals in water.
D does not conduct an electric current.