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MCAS Questions 8th grade science Flashcards | StudBud
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MCAS Questions 8th grade science
MCAS Questions 8th grade science
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1
The comet travels more quickly in its orbit when it is closer to the sun. Why?
The mass of the comet increases.
The frictional force on the comet increases.
The temperature of the comet increases.
The gravitational pull on the comet increases.
2
Which of the following patterns could be used to the create the box?
D
A
B
C
3
How many protons does oxygen have?
16
8
4
most
efficient way to transport large amounts of coal from a mine in Kentucky to Arizona is:
by ship
by train
by airplane
by truck
5
If all the trees were cut down, which population would be
most directly
affected?
Oriole
Aphid
Grasshopper
Rabbit
6
What can you conclude about the bacterium?
it is missing genetic material
it is the same as a vacuole
it is made up of one cell
it is unable to move
7
Which of the following statement
best
explains why moisture appears?
The warm air absorbs cold from the can changes to a liquid.
Water vapor in the air absorbs heat from the can.
Water vapor in the air condenses into a liquid on the can.
Warm air causes heat to flow out of the can and condenses.
8
Which of the following
is most likely
marked by the
X
on the map?
a valley
a river
a plain
a cliff
9
Which of the following
best
describes the role of the perch in this energy pyramid?
secondary consumer
decomposer
producer
primary consumer
10
What is the atomic number?
16
8
15.999
11
Which of the following is a cause of the ocean levels periodically rising and then falling?
the force of gravity from the Moon
the slight tilt of the Moon
the revolution of Earth around the sun
the convection within Earth's mantle
12
Which of the following processes is represented in the box?
decomposition
photosynthesis
metamorphosis
respiration
13
Which of the following diagrams
best
represents the angle of the sun's rays on June 21?
C
B
A
D
14
Which of the following
best
describes the mass of a solid block of ice?
the amount of matter in a block
the force of gravity acting on the block
the distance between the molecules in the block
the amount of space the block takes up
15
10g of
substance A
is heated to produce 9.3g of
substance B
and .7g of
substance C
. this is:
law of conservation of mass
law of conservation of energy
physical change
heat transfer
16
Which of the following is a physical change?
rusting bicycle
Cutting wood
burning wood
17
Wolves kill many elk every year mostly old, sick and injured elk. What is the relationship?
host
competitor
parasite
predator
18
The organism Anya is observing
most likely
belongs to which kingdom?
Eubacteria
Animalia
Plantae
Fungi
19
During what time period is the runner's speed constant?
0-8 min
4-8 min
6-8 min
2-8 min
20
Which of the following would
best
protect the eggs?
a lightweight wooden case with strong aluminium lining
a hard metal case with flexible foam lining
a flexible metal case with smooth plastic lining
a strong wooden case with lightweight plastic lining
21
Which of the following orders a fishes respiratory system from least to most complex?
gills->tissues->cells
cells->gills->tissues
cells->tissues->gills
tissues->gills->cells
22
Which of the following has changed over the last 200 years
primarily
due to human activity?
Earth's magnetic field
The composition of the atmosphere
Earth's tectonic plate activity
The frequency of earthquakes
23
If a student removes two books, what will happen to the motion of the ball?
The ball takes more time to reach the bottom of the ramp.
The ball has a higher speed at the top of the ramp.
The ball has a higher average speed when it rolls
The ball accelerates more quickly down the ramp.
24
Which of the following processes caused the breakup and relocation of the landmasses over time?
tectonic plate motion
erosion and sedimentation
strong ocean currents
volcanic eruptions and weathering
25
Muscle cells convert energy from food into usable energy. What do they have in great numbers?
mitochondria
nuclei
vacuoles
chromosomes
26
What is the formula for speed?
Time/Velocity
Time/Distance
Distance/Time
Velocity/Time
27
Most PRECISE
a 500 mL beaker
a 50 mL graduated cylinder
a 50 mL beaker
a 500 mL graduated cylinder
28
What is the
most important
function of the research and development of a large corporation?
to create, test, and improve products
to mange the manufacturing of products
to persuade customers to buy the products
to label, package, and send products to retail stores
29
What is density?
Volume/Mass
Mass/Volume
Weight/Volume
Volume/Density
30
A pilot lowers the flaps before takeoff to increase which of the following forces?
gravity
thrust
lift
drag
31
What is produced in photosynthesis?
Water and glucose
Glucose and Oxygen
Carbon Dioxide and Glucose
Oxygen and Carbon Dioxide
32
Which of the following statements
best
describes why sweating helps a person feel cool?
The temperature of the water in sweat goes down.
Heat is absorbed by the body when sweat evaporates.
Heat is absorbed by sweat when it evaporates.
The temperature of water in the body goes up .
33
Which of the following do water (H
2
O), rust (Fe
2
O
3
), and salt (NaCl) have in common?
Water, rust, and salt are elements.
Water, rust, and salt are compounds.
Water, rust, and salt are all atoms.
Water, rust, and salt are mixtures.
34
Earth's core is
primarily
composed of which of the following materials?
basalt
iron
quartz
magna
35
Which of the following
most likely
causes Earth's inner core to be a solid?
The pressure at the core is very high.
The metals in the core are very heavy.
The temperature of the core is very low.
The chemicals in the core are very reactive.
36
What is being described in the image?
a constellation
a galaxy
the universe
the solar system
37
Which of the following combinations is a mixture rather than a compound?
sodium and chlorine in salt
nitrogen and hydrogen in ammonia
oxygen and nitrogen in air
hydrogen and oxygen in water
38
What is most likely represented by the arrows?
heat
water
sunlight
nutrients
39
Which diagram
best
represents two different elements combining to form a compound?
d
b
c
a
40
Which of the following parts of a plant cell has a function similar to an animal skeleton?
Nucleus
Cell membrane
Cell wall
Chloroplasts
41
Which of the following statements
best
describes the role of gravity in the formation of stars?
Gravity pushes rocks and dust outward from a dense center.
Gravity converts solid matter into gases and light energy.
Gravity causes gases and dust to condense into spheres.
Gravity cools gases and liquids until they are solid mass.
42
Which of the following has a warmer
average
surface temperature than Earth?
Mars
Pluto
Venus
Moon
43
In which position would the Moon appear as a full moon as seen from Earth?
position 3
position 2
position 1
position 4
44
Choose the best answer.
The species both obtain oxygen from the air.
The species have similar bone structure.
The species live in the same environment.
The species are both herbivores
45
At which location does the ball have the
greatest
amount of kinetic energy?
1
3
2
4
46
Euglena: single-cell photosynthetic organism. Clover: multicellular green plant. Both do??
transmit impulses along nerve pathways
Use light energy to produce sugar
move nutrients to specialized tissues
produce sex cells to reproduce
47
Which of the following
best
describes the physical feature represented by this contour map?
a series of rivers flowing in concentric circles
a hill with slopes that vary in steepness
a valley with two gentle sloping slides
a flood plain with creeks and streams
48
CO
2
produced by cells is removed from the body
primarily
by which body system?
immune
respiratory
digestive
excretory
49
Which diagram
best
represents the size relationships among galaxies, stars, and the universe?
D
C
B
A
50
Warm air masses that rise over Earth's equator move north to south. What is this process?
Insulation
Convection
Radiation
Conduction
51
Which of the following compounds is ionic?
NaCl
H2O
