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Duplicate of 8th Grade Science MCAS Review 2017 Flashcards | StudBud
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Duplicate of 8th Grade Science MCAS Review 2017
Duplicate of 8th Grade Science MCAS Review 2017
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Science review for the 2017 MCAS (blended standards).
Flashcards
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Questions
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Answers
1
How many pairs of chromosomes are in the human genome?
12
23
24
60
2
What is made up of many billions of galaxies?
gravity
solar system
universe
stars
3
When you touch a desk that feels cold, the desk is considered:
gravitational
an equilibrium
exothermic
endothermic
4
Which of these are unicellular?
bacteria
plants
protists
animals
5
The mass of the reactants should always equal the mass of the:
products
water
mixtures
compounds
6
Large formations such as volcanoes, mountains, and ocean basins are caused by
gravity
weathering
plate tectonics
the rotation of Earth
7
The basic unit of all living things is the
molecule
cell
element
proton
8
When an object spins on its axis, this is called:
force
orbit
revolution
rotation
9
Which planet has warmer average surface temperatures compared to Earth?
Pluto
Mars
Moon
Venus
10
The breaking down of materials such as rock is called:
erosion
deposition
weathering
photosynthesis
11
Which of the following organisms is a producer?
mushroom
moss
mold
rabbit
12
The force that pulls all things on and near the Earth toward the Earth's center is called:
distance
speed
gravity
velocity
13
At what point did the car take a break?
60-100 seconds
20-40 seconds
60 seconds
0-10 seconds
14
The organelle that converts sugar into energy is called
nucleus
chloroplast
mitochondria
cell wall
15
The amount of space an object takes up is called:
distance
mass
volume
density
16
10 mL of Substance X has a boiling point of 60
o
F. What would the boiling point of 100 mL be?
10oF
600oF
30oF
60oF
17
What is the jelly-like substance that fills the cell?
nucleus
DNA
cytoplasm
ribosome
18
Organisms that breakdown dead matter are called:
herbivores
decomposers
producers
carnivores
19
What are the products of photosynthesis?
sugar and sunlight
sugar and CO2
CO2 and O2
sugar and O2
20
A set of "instructions" that give an organism specific traits is located in the
chromosomes
chloroplasts
nucleus
cell membrane
21
The organelle that surrounds and protects plant cells is called
cell membrane
chloroplast
mitochondria
cell wall
22
Which contains more than one element that are NOT chemically combined?
element
pure substance
mixture
compound
23
The energy of motion is called:
light energy
potential energy
thermal energy
kinetic energy
24
Which picture shows a pure element?
W
X
Z
Y
25
The body system that transports oxygen to parts of the body and removes other waste is called:
circulatory
respiratory
skeletal
muscular
26
Which organelle surrounds and protects all cells?
nucleus
cell membrane
cell wall
mitochondria
27
Which planet is NOT gaseous?
Mars
Saturn
Jupiter
Uranus
28
At which point does the diver have the
least
potential energy?
4
2
1
3
29
Two different elements combine to make a:
element
compound
periodic table
atom
30
The smallest unit of an element that maintains the characteristics of that element is a(n):
mixture
molecule
atom
compound
31
Heat will move to cooler objects until
until both objects are cool
the opposite object is now hotter
the opposite object is much cooler
equilibrium
32
Which body system is responsible for controlling thoughts, movement, vision, hearing, etc.?
reproductive
nervous
respiratory
digestive
33
The amount of matter in an object is called:
volume
mass
space
shape
34
Change in a population over a long period of time is called:
evolution
biology
natural selection
extinction
35
Evolution happens to a(n) ___________over a long period of time.
consumer
producer
organism
population
36
Which of these diagrams shows conduction?
None
Diagram X
Diagram Z
Diagram Y
37
In order to create sex cells, multicellular organisms do:
mitosis
meiosis
genes
photosynthesis
38
What is the correct formula for density?
D = M/V
D = M-V
D = M + V
D= M x V
39
What is the outermost layer of the Earth called?
inner core
mantle
crust
outer core
40
What body system provides structure, helps the body to move, and protects internal organs?
reproductive
skeletal system
immune system
digestive system
41
Seasons are caused by where the Earth is in its revolution around the sun AND its
gravity
rotation
materials
tilt
42
When the moon is blocking sunlight, what type of eclipse is it?
quarter
solar
crescent
lunar
43
Which of these is a decomposer?
bacteria
tree
earthworm
mushroom
44
Organisms that are better adapted to their environment and survive better, this is called:
heredity
species
natural selection
population
45
Which of the following options is evidence for evolution?
comparing height
comparing strength
comparing weight
comparing anatomy
46
Luke observed an organism & recorded his observations. What type of organism did Luke observe?
Animal
Plant
Dead
Living
47
Which organelle converts sunlight, water, and carbon dioxide into sugar and oxygen?
chloroplast
mitochondria
nucleus
cell wall
48
What word best describes this moon phase?
gibbous
crescent
waning
full
49
Which item has less density than the lamp oil?
soda cap
rubbing alcohol
ping pong ball
honey
50
Adding energy to a liquid will result in
lower temperature
faster moving particles
potential evaporation
slower moving particles
