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TestBuilder - Grade 10 Science
1.
The Hertzsprung-Russell diagram shown below represents characteristics of groups of stars.
click to enlarge
Sirius B is a star with a very high temperature and very low luminosity. What type of star is Sirius B?
A)
B)
C)
D)
2.
An object is lifted to the top of a bookcase. Which instrument would be best to use to measure
the force required to lift the object?
A)
B)
C)
D)
3.
a stopwatch
a meter stick
a spring scale
a pressure gauge
Scientists use the electron cloud model to describe atomic structure. According to this model,
which feature of an atom is described by probabilities?
A)
B)
C)
D)
4.
giant
supergiant
white dwarf
main sequence
charge of electrons
mass of an electron
number of electrons
location of an electron
Which type of energy is stored in chemical bonds?
A)
B)
C)
D)
kinetic
nuclear
potential
gravitational
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TestBuilder - Grade 10 Science
5.
Some elements have two electrons in their outermost electron energy level. Which describes
the most likely location of these elements in the periodic table?
A)
B)
C)
D)
6.
Which element will most likely act as a cation in an ionic bond?
A)
B)
C)
D)
7.
second column from the left
second row from the top row
second column from the right
second row from the bottom row
argon (Ar)
oxygen (O)
calcium (Ca)
bromine (Br)
Liquid hydrogen peroxide (H2O2) decomposes to produce water (H2O) and
oxygen gas (O2), as shown by the chemical equation below.
What is the ratio of (H2O2) to (O2) in this reaction?
A)
B)
C)
D)
8.
2 liters H2O2 to 1 liter O2
2 grams H2O2 to 1 gram O2
2 molecules H2O2 to 1 molecule O2
2 cubic centimeters H2O2 to 1 cubic centimeter O2
How much force must be applied to a stationary 10-kilogram object to accelerate it at a rate of 2
meters/second on a frictionless surface?
A) 5 newtons
B) 8 newtons
C) 12 newtons
D) 20 newtons
9.
What is the amount of work done if a 7-newton force is exerted over a 5-meter distance?
A)
B)
C)
D)
5 newton-meters
7 newton-meters
12 newton-meters
35 newton-meters
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TestBuilder - Grade 10 Science
10.
The diagram below shows an incom- A)
ing ray striking a concave mirror.
Which diagram best represents the
reflected ray?
11.
D)
In a class discussion, a teacher explained that when some objects are rubbed together, they
become electrically charged. The teacher then rubbed a balloon with wool, and when she
touched the balloon to a wall, it stuck to the wall. Which best explains why the balloon stuck to
the wall?
A)
B)
C)
D)
12.
C)
B)
Static electricity in the balloon was attracted to electrical currents in the wall.
The balloon became charged and was attracted to the opposite charge it induced in the wall.
As the balloon approached the wall, the moving charge induced a magnetic field in the wall.
The balloon was attracted to the wall because the balloon and the wall both carried the same
charge.
Which best describes the cause of the movement of Earth's tectonic plates?
A)
B)
C)
D)
magnetic energy stored in Earth's core
solar energy entering Earth's atmosphere
gravitational energy located at Earth's surface
heat energy transferred through Earth's mantle
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TestBuilder - Grade 10 Science
13.
Which is the major cause of the winter season in the United States?
A)
B)
C)
D)
14.
Which is true for most main sequence stars?
A)
B)
C)
D)
15.
Earth's distance from the sun is at its greatest.
Earth's atmosphere is blocking more solar energy.
Earth's prevailing winds blow from a northerly direction.
Earth's axis tilts the northern hemisphere away from the sun.
They will become a black hole.
They convert carbon to oxygen.
They have shorter life cycles than other star types.
They use fusion of hydrogen atoms to produce energy.
Microscopes represent a technological advance made possible by the application of scientific
knowledge. Which field of scientific study provided important knowledge needed to develop the
first microscope?
A)
B)
C)
D)
optics
genetics
astronomy
microbiology
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