stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Grade 8 MCAS Review (Earth and Life Science) Flashcards | StudBud
Explore
/
Grade 8 MCAS Review (Earth and Life Science)
Grade 8 MCAS Review (Earth and Life Science)
38 terms
·
StudBud Administration
·
2,264 plays
Review of Earth and Life Science standards for the Grade 8 MCAS Science/Technology/Engineering exam.
Flashcards
38 cards
F
Practice quiz
P
Host live
L
Questions
38
Answers
1
In which kingdom is the paramecium classified?
fungi
plantae
animalia
protista
2
Human activity most likely contributes to which of the following changes on Earth?
a decrease in the magnitude of earthquakes
a decrease in the number of volcanic eruptions
an increase in the length of the day
an increase in the amount of atmospheric CO2
3
Which of the following is the best evidence that Earth has evolved over geologic time?
rock containing fossilized shells found on a mountain top
desert sand dunes that were shaped by winds
deposits of sediment found at the mouth of a river
coral reefs that slowly changed size
4
How is a skin cell from a mouse similar to an amoeba?
Both consume carbon dioxide.
Both move with pseudopodia.
Both need energy.
Both have cell walls.
5
Why is water at the surface of the ocean is warmer than water at the bottom of the ocean?
Water at the surface absorbs more energy from the sun
Wave action transfers heat from the bottom to the surface
Water at the bottom of the ocean holds more dissolved soilds
Friction is created by fast moving currents at the surface
6
Which of the following best describes the number of chromosomes in a normal human liver cell?
46 male chromosomes and 46 female chromosomes
23 pairs of chormosomes
46 different types of chromosomes
23 original chromosomes and 23 duplicate chromosomes
7
The Appalachian Mountains were much taller in the past than they are today. Why?
tectonic collisions and earthquakes
volcanic eruptions and landslides
sedimentation and flooding
weathering and erosion
8
Which of the following parts of the human body is most complex?
heart
white blood cell
kidney
central nervous system
9
What phase of the moon would result in from the diagram below?
new moon
waining crescent
waxing crescent
full moon
10
Two purple-flowered plants were crossbred, why would some offspring have white flowers?
The offspring were produced in a dark environment
The offspring were created by asexual reproduction
They inherited DNA coding for white flowers from each parent
They inherited DNA coding for white flowers from one parent
11
What would be most helpful to classify a newly discovered organism into the correct kingdom?
the organism's natural habitat
the color of the organism
the structure of the organism's anatomy
the location the organism was found
12
Which season is occurring in the Southern Hemisphere in the diagram below?
Winter
Fall
Summer
Spring
13
Which of the following groups of organisms uses sunlight to convert CO2 into sugar and oxygen?
carnivores
producers
herbivores
decomposers
14
Comparing the skeletons of which of the following would show the evolution of a fish species?
a male fish and a female fish that could produce offspring
the same fish just after it hatched and when it was adult
a fish that lived recently and a fish that lived long ago
the same fish before it received a cut & after it healed
15
The time of year of the winter solstice occurs has the least amount of daylight in Mass because
Earth's rotational speed is greatest on the winter solstice
Earth is farthest away from the Sun on the winter solstice
Earth is orbiting the sun the fastest on the winter solstice
The Northern Hemisphere is tilted from the Sun in winter
16
What do these two organisms have in common?
They are unicellular
They are photosynthetic.
They live underground.
They cause diseases.
17
Seafloor spreading provides evidence of which of the following Earth processes?
formation of sedimentary rock
movement of crustal plates
weathering of mountains
erosion of coastlines
18
In the human body, which system functions primarily to defend the body against disease?
respiratory
digestive
immune
nervous
19
What's the best estimate of the difference in elevation between Black Bear Camp and Eagle Peak?
1200 m
400 m
900 m
1500 m
20
What do the green algae supply to the fungi in the symbiotic relationship of lichen?
carbon dioxide
water
protection
food
21
How are the four planets closest to the Sun different from the next four in our solar system?
The four closest planets are more dense.
The four closest planets take longer to complete one orbit.
The four closest planets have more moons.
The four closest planets have greater diameters.
22
In which form of reproduction will the offspring differ most from the parent in these diagrams:
C
D
B
A
23
What is the cause of the measured difference in the temperature of the two soils?
Condensation within different soil types
convection in the air above different soil types
Radiation emitted by different soil types
Conduction within the different soil types
24
Why did the beak shape of each species of bird in the diagram below develop differently?
To help the bird produce different songs
to a specific source of food
to construct a different type of nest
to help protect from a different predator
25
Which of the following structures is
not
present in animal cells?
mitochondrion
nuclues
cell wall
cell membrane
26
Which of the numbered drawings in the diagram represents a tissue?
1
3
2
4
27
If cows are selectively bred to produce milk, what will cause offspring to receive that trait?
essential minerals in the cows' water
electrical impulses in the cows' brians
nutrients in the cows' food
information in the cows' chromosomes
28
Which cell structure is present in both plant and animal cells and makes energy available?
mitochondrion
chloroplast
nucleus
cell wall
29
Changing tides are
mostly
due to gravitational influence of what object?
comets
asteroids
the Moon
the Sun
30
Which of the following correctly lists the structures in space from smallest to largest?
star, solar system, universe, galaxy
star, universe, solar system, galaxy
star, solar system, galaxy, universe
star, galaxy, solar system, universe
31
What is the name of layer of solid brittle rock surrounding the outer 100 kilometers of Earth?
Hemisphere
Core
Lithosphere
Sediment
32
Which statement supports the similarities between a turtle and a chicken embryo?
The turtle and the chicken are similar as adults.
The chicken has more offspring than the turtle.
The chicken and the turtle share a common ancestor.
The turtle is more advanced than the chicken.
33
Which change caused bacteria that can only survive where there is no O2 to become extinct?
the varying temperatures of each season
the slow movement of tectonic plates
an increase in volcanic activity under the oceans
an increase in the number of photosynthetic organisms
34
The instructions that determine coat color for these two dogs are stored in the...
mitochondria of hair cells.
chromosomes of every cell.
cytoplasm of skin cells.
membrane of every cell.
35
Most bacteria in a forest ecosystem are best classified as which type of organism?
predators
decomposers
consumers
producers
36
Which of the following best describes a role of mushrooms in ecosystems?
taking energy from animal hosts
capturing energy from sunlight
breaking down dead plant material
consuming living plant material
37
Why does a ship's iron anchor to sink to the ocean floor when it is released overboard?
gravity
magnetism
nuclear forces
chemical forces
38
Which of the following Earth layers has the greatest density?
Crust
Inner Core
Outer Core
Mantle
