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STAAR 8th Grade Science Review Flashcards | StudBud
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STAAR 8th Grade Science Review
STAAR 8th Grade Science Review
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prepare for 8th grade science STAAR Test
Flashcards
41 cards
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Practice quiz
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Questions
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Answers
1
The following organisms are producers because they contain which unique organelles
cell wall and chloroplast
cell membrane and chloroplasts
chloroplast and mitochondrion
cell wall and nucleus
2
An object at rest stays at rest until an unbalanced force acts on it, which law is this?
1st
3rd
2nd
3
Sun is a medium-sized star near the edge of a disc-shaped galaxy of stars
True
False
4
Which subatomic particle has a positive charge?
nucleus
electron
neutron
proton
5
How many hydrogen are found in this molecule? (NH
4
)
2
CO
3
6
4
9
8
6
The number of electrons in the last shell of an atom is called what
group
nucleus
valence
period
7
tendency of a substance to undergo chemical changes in a system
metal
frequency
conductor
reactivity
8
underwater Trenches are caused by
subduction
transform
convergent
divergent
9
Which type of galaxy is shown below?
spiral
irregular
round
elliptical
10
This is an eclipse but it could also be which moon phase?
full
third quarter
first quarter
new
11
Satellites move at a constant speed around celestials bodies due to which law
1st
2nd
3rd
12
Genetically altering the DNA of a plant or animal is called
evolution
natural selection
alternation of generation
selective breeding
13
Which form of energy is used to power the vehicle?
chemical energy
thermal energy
mechanical energy
solar energy
14
Which of the following is an example of a chemical change?
cutting a watermelon
food coloring in water
crushing almonds
bubbles forming
15
When plate boundaries form mountains this is an example of which boundary?
divergent
transform
convergent
subduction zone
16
This crustal feature was done to prevent which of the following processes
weathering
extinction
deposition
erosion
17
Objects in space, made of gases, which produce their own light and heat
star
galaxy
nebulae
planet
18
Fossil record and rock correlation support this theory
newton's laws
evolution
continental drift
plate tectonics
19
the formation of solids from a solution
precipitate
solidification
melting
freezing
20
An organism that feeds off of another organism, in order to survive(e.g., tick, flea, tapeworm)
prey
host
predator
parasite
21
Volcanoes are caused by which plate tectonic boundary
transform
convergent
divergent
22
Used for measuring the intensity of the energy of celestial objects
x rays
light waves
radio waves
microwaves
23
The mass (g) of substances in the reactants is equal to the mass of substances in the
equation
products
coefficient
subscript
24
In the equation 3H
2
O, the number 2 is called what
coefficient
atomic mass
subscript
atomic number
25
The smallest unit of life is the
nucleus
organism
cell
atom
26
Which of Newton's Law is responsible for lift off of the space shuttle?
Newton's 1st Law
Newton's 3rd Law
Newton's 2nd Law
27
Law of conservation of mass states
matter is destroyed
matter is neither created or destroyed
Matter is created
matter is not created
28
When speed is combined with direction it is called which of the following
distance
acceleration
constant speed
velocity
29
If the woman in the picture does not move is work being done?
Yes
No
30
Clouds of gas and dust. Sites of star formation. Remains of dead or dying stars
galaxy
comet
nebulae
black hole
31
"APE" in APE MAN represents which of the following
A=P+E
A-P=E
A+P=E
A=P=E
32
Which particle is found in the cloud
protons
nucleus
electrons
neutrons
33
a system of stars and associated matter, held together by gravitational attraction
galaxy
solar system
Moon
universe
34
fill in the blank convergent means _________
sliding
dividing
subduction
colliding
35
Reactivity increases from left to right in a period
true
false
36
You are in a car driving and the breaks are applied, you fly forward, which Law is this?
Law of Inertia
Law of Action-Reaction
Law of Force and Acceleration
Newton's 2nd Law
37
The valence electron number determines which of the following
proton number
identity
size of the atom
similar characteristics
38
A neutron has which charge
negative
positive
no charge
39
Elements in the same period have the same number of what
valence electrons
neutrons
protons
energy levels
40
distance light can travel in a vacuum in one year; equal to approximately 9.5 X 10
12
km
galaxy
acceleration
visible light
light year
41
The mass of an atomic is the combination of which two particles
proton and neutron
electron and proton
electron and neutron
proton and nucleus