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CST Practice Quiz
CST Practice Quiz
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1
A net force on a non-moving object will cause the object to...
move in the direction of the net force
reduce the speed of its movement
reverse the direction of its movement
move away from the direction of the net force
2
What is true if an object sinks in water?
buoyant force is greater than gravity
buoyant force is less than gravity
buoyant force is equal to gravity
buoyant force does not act against gravity
3
In Figure B, the block does not move because of...
sliding kinetic friction
kinetic friction
static friction
rolling kinetic friction
4
When enough energy is added to a liquid to overcome the attractions between particles...
the liquid changes into a crystal
the liquid changes into a gas
the liquid changes into a solid
the liquid changes into plasma
5
Acceleration has a particular meaning in science. An object accelerates if...
its speed and/or direction change
its speed increases
its speed increases or decreases
its speed increases or its direction changes
6
What are the three major types of galaxies?
spiral, triangular, elliptical
spiral, elliptical, irregular
triangular, elliptical, irregular
spiral, triangular, irregular
7
A bus moves north at 15 m/s, and you walk to the rear of the bus at 1 m/s. Your velocity is...
16 m/s south
1 m/s south
14 m/s north
15 m/s north
8
What type of biochemical does not dissolve in water?
vitamin
protein
lipid
carbohydrate
9
Which statement about elements bordering the zig-zag line on the periodic table is false?
The element likely has metallic and non-metallic properties
The element will likely be less malleable and more brittle
The element is likely to be a metalloid
The element will likely be unreactive
10
In a saturated hydrocarbon, how many atoms does each carbon atom bond with?
four
three
two
one
11
Balancing a chemical equation so the reactants and products have equal numbers of atoms is...
because of the law of conservation of mass
because of the law of conservation of energy
because of activation energy
a double-displacement reaction
12
In Figure A, why does the block not move?
force of friction
surface friction
no force is being applied
kinetic friction
13
How many neutrons are found in a carbon-14 atom nucleus?
8
10
14
6
14
Why are transition metals better for jewelry than alkali metals?
transition metals are gases at room temperature
some transition metals produce a magnetic field
transition metals are silver-colored
transition metals are less reactive than alkali metals
15
Ball B is moving to the west. If a force towards the west acts on ball B...
the velocity of the ball would decrease
the ball would travel a greater distance every second
the ball would have negative acceleration
the graph of the ball's motion would not change
16
The reason why mass and weight are the same everywhere on Earth is because...
mass is the same as weight throughout the universe
mass and weight are the same thing
mass and weight are measured the same way
the gravitational force is the same
17
A 5 kg object has less inertia than an object that has a mass of
2 kg
4 kg
1500 g
6000 g
18
In this H-R Diagram, where are stars that are yellow and have average brightness?
In the middle
At the bottom left
At the top left
At the bottom right
19
Scientists often use what types of calculations to determine what kind of substance they have?
density
weight
mass
length
20
Which process causes substances to react to form one or more new substances?
physical change
evaporation
chemical change
freezing
21
Which of the following correctly shows the order of the inner planets from the sun?
Mercury, Venus, Earth, and Mars
Mercury, Earth, Mars, and Venus
Mars, Venus, Earth, and Mercury
Mercury, Mars, Venus, and Earth
22
What is the distance traveled divided by the time interval during which the motion occurs?
duration
motion
speed
reference point
23
When sand is heated to high temperatures and forms molten glass, it is an example of...
a material change
a chemical change
a physical change
a physical reaction
24
Which of the following best represents acceleration as presented on a graph?
distance change vs. time
motion change vs. time
velocity change vs. time
speed change vs. time
25
When an object changes position over time when compared with a reference point, the object is
accelerating
stopping
turning
in motion
26
The state of matter that has a definite volume but no definite shape is
gas
liquid
solid
plasma
27
Which of the following would not affect the level at which a canoe floats in water?
shape of the canoe
density of the canoe's material
number of people in the canoe
depth of the water
28
Aluminum-27 has 13 protons. What is the total mass of its neutrons?
40 amu
13 amu
27 amu
14 amu
29
What is the density of a liquid that has a mass of 200 g and a volume of 40 mL?
5 g/mL
8000 g/mL
20 g/mL
80000 g/mL
30
Which of the following is an exothermic change?
water evaporating
dry ice becoming a gas
ice freezing
ice melting
31
An object moves in a straight line at constant speed. The forces on it are balanced. It will
go into a circular orbit due to centripetal force
move in a direction opposite to the force
gradually slow down and come to a stop
keep the same motion
32
In Figure C above, the block is moving. What force acts against the block's motion?
gravity
rolling kinetic friction
static friction
sliding kinetic friction
33
Bonnie Thunders skated 400 m in 10 seconds. What is her average speed in meters per second?
390 m/s
40 m/s
4000 m/s
410 m/s
34
Carbon has a central role in the chemistry of living things because...
carbon is the most abundant element in organisms
it helps organism regulate temperature
it allows organisms to transmit nerve impulses
carbon atoms combine in many ways with carbon and elements
