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8th Grade Science MCAS Review 2023 Flashcards | StudBud
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8th Grade Science MCAS Review 2023
8th Grade Science MCAS Review 2023
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Science review for the 2017 MCAS (blended standards).
Flashcards
47 cards
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Questions
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Answers
1
Seasons are caused by where the Earth is in its revolution around the sun AND its
materials
gravity
rotation
tilt
2
When an object spins on its axis, this is called:
force
orbit
rotation
revolution
3
Which organelle converts sunlight, water, and carbon dioxide into sugar and oxygen?
cell wall
chloroplast
nucleus
mitochondria
4
Which picture shows a pure element?
Z
W
X
Y
5
Change in a population over a long period of time is called:
natural selection
extinction
evolution
biology
6
Which of these is a decomposer?
mushroom
earthworm
tree
bacteria
7
What is the correct formula for density?
D = M-V
D= M x V
D = M/V
D = M + V
8
Which organelle surrounds and protects all cells?
mitochondria
nucleus
cell membrane
cell wall
9
Which of the following organisms is a producer?
mushroom
rabbit
moss
mold
10
The breaking down of materials such as rock is called:
erosion
deposition
weathering
photosynthesis
11
The amount of matter in an object is called:
shape
space
volume
mass
12
Which of these are unicellular?
bacteria
plants
animals
protists
13
Which of these diagrams shows conduction?
None
Diagram X
Diagram Z
Diagram Y
14
What word best describes this moon phase?
gibbous
waning
full
crescent
15
Luke observed an organism & recorded his observations. What type of organism did Luke observe?
Dead
Living
Animal
Plant
16
What is the outermost layer of the Earth called?
inner core
crust
mantle
outer core
17
At which point does the diver have the
least
potential energy?
2
1
4
3
18
The basic unit of all living things is the
proton
element
cell
molecule
19
Which organelle found in all types of cells except bacteria uses oxygen to change food into energy the cell can use?
nucleus
ribosome
DNA
cytoplasm
20
The smallest unit of an element that maintains the characteristics of that element is a(n):
mixture
compound
molecule
atom
21
Evolution happens to a(n) ___________over a long period of time.
organism
producer
consumer
population
22
The body system that transports oxygen to parts of the body and removes Carbon Dioxide waste is called:
muscular
respiratory
circulatory
skeletal
23
When the moon is blocking sunlight, what type of eclipse is it?
crescent
solar
quarter
lunar
24
How many pairs of chromosomes are in the human genome?
24
12
23
60
25
Two different elements chemically combine to make a:
element
periodic table
compound
atom
26
Organisms that breakdown dead matter are called:
herbivores
decomposers
producers
carnivores
27
Organisms that are better adapted to their environment and survive longer and reproduce more, this is called:
heredity
population
natural selection
species
28
The force that pulls all things on and near the Earth toward the Earth's center is called:
velocity
speed
distance
gravity
29
The organelle that converts sugar into energy is called
chloroplast
nucleus
cell wall
mitochondria
30
When you touch a desk that feels so absent of heat "cold", the desk is considered:
gravitational
an equilibrium
exothermic
endothermic
31
The energy of motion is called:
potential energy
light energy
thermal energy
kinetic energy
32
A set of "instructions" that give an organism specific traits is located in the
chloroplasts
chromosomes
cell membrane
nucleus
33
10 mL of a pure substance called "X" has a boiling point of 60
o
F. What would the boiling point of 100 mL be?
600oF
10oF
60oF
30oF
34
The amount of space an object takes up is called:
volume
density
distance
mass
35
The Law of Conservation of Matter says that for a chemical equations, the mass of the reactants equals the ........
water
mixtures
products
compounds
36
Heat will move to cooler objects until
until both objects are cool
equilibrium
the opposite object is much cooler
the opposite object is now hotter
37
Why does Earth have an atmosphere but Mercury does not?
Because Bill Nye says so.
Earth has a stronger gravitational pull because it has more mass.
Mercury is too close to the Sun to have gravity.
No one really knows.
38
Adding energy to a liquid will result in
slower moving particles
potential evaporation
lower temperature
faster moving particles
39
At what point did the car take a break?
60 seconds
60-100 seconds
20-40 seconds
0-10 seconds
40
What body system provides structure, helps the body to move, and protects internal organs?
skeletal system
digestive system
reproductive
immune system
41
Which body system is responsible for controlling thoughts, movement, vision, hearing, etc.?
respiratory
reproductive
nervous
digestive
42
What is made up of many billions of galaxies?
stars
universe
solar system
gravity
43
The organelle that controls what goes in and out of the cell is called the _____
chloroplast
cell membrane
cell wall
mitochondria
44
Which item has less density than the lamp oil?
rubbing alcohol
ping pong ball
soda cap
honey
45
Which contains more than one element that are NOT chemically combined?
pure substance
mixture
element
compound
46
Large formations such as volcanoes, mountains, and ocean basins are caused by
the rotation of Earth
plate tectonics
weathering
gravity
47
What are the products of photosynthesis?
sugar and sunlight
sugar and O2
sugar and CO2
CO2 and O2