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WorksheetsDO YOU KNOW DA WAE? 8th Grade Science STAAR Review 2018
Total questions: 84
Worksheet time: 2hrs 45mins
Name
Class
Date
1.
When an object is in motion, it has ___________ energy.
a)
potential
b)
mechanical
c)
kinetic
d)
movement
2.
When plants convert the sun's energy into food, which type of energy is it?
a)
kinetic
b)
chemical
c)
thermal
d)
radiant
3.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
4.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
5.
Where is potential energy converting to kinetic energy
a)
D-G
b)
C-F
c)
A-D
d)
A-G
6.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
7.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
8.
Organic compounds are always based on what element?
a)
hydrogen
b)
water
c)
carbon
d)
arsenic
9.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
10.
Is this an example of an organic or inorganic compound?
a)
Organic
b)
Inorganic
11.
2 or more elements chemically bonded is a
a)
compound
b)
element
c)
atom
12.
Organic or Inorganic?
a)
Organic
b)
Inorganic
13.
In which time interval was the speed of the object decreasing?
a)
between 0 s and 2 s
b)
between 2 s and 4 s
c)
between 6 s and 8 s
d)
between 8 s and 10 s
14.
In which time interval was the object speeding up?
a)
between 0 s and 2 s
b)
between 2 s and 4 s
c)
between 6 s and 8 s
d)
between 8 s and 10 s
15.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
16.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
17.
When a car goes around a corner at 20 mph, why do we say it accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
18.
What is this graph showing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
19.
What is this graph showing?
a)
Constant Speed
b)
object is speeding up
c)
object is slowing down
d)
No motion
20.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
21.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
22.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
23.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
24.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
25.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
26.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
27.
How many neutron are in the atom "K"?
a)
7
b)
2
c)
39
d)
20
28.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
29.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
30.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
31.
What is the chemical symbol for Chlorine
a)
C
b)
Cl
c)
Ch
d)
Ce
32.
Atoms are mostly filled with?
a)
electrons
b)
empty space
c)
protons
33.
In what areas of the world do hurricanes form?
a)
Warm ocean waters
b)
Polar ocean waters
c)
On lakes and rivers
d)
Over the central plains of the U.S
34.
A hurricane gets its energy from
a)
Warm ocean waters
b)
high air pressure
c)
winds along surface
d)
Sun
35.
Calmest winds of a hurricane
a)
Eye wall
b)
Eye
c)
Upper elevations
d)
Storm surge
36.
Coriolis Effect is a force caused by
a)
Earth's seasons
b)
Earth's spinning core
c)
Earth's tides
d)
Earth's rotation
37.
How many categories of hurricanes
a)
2
b)
3
c)
4
d)
5
38.
What is the difference between a hurricane, a typhoon, and a tropical cyclone?
a)
Begin on different dates
b)
Begin in warm waters
c)
Begin in different locations
d)
Begin/end on time
39.
Direction hurricanes spin in the northern hemisphere
a)
clock-wise
b)
counter clock-wise
40.
What might happen if the global conveyor stopped?
a)
Marine life would get too much oxygen
b)
Marine life would get too little oxygen
c)
There would be no effect
d)
There would be a new ice age
41.
____________ are large streams of moving water that flow through the oceans.
a)
La Niña
b)
El Niño
c)
Currents
d)
Climate
42.
_______ are the producers of Antarctic food webs.
a)
Zooplankton
b)
Phytoplankton
c)
Whales
d)
Upwellings
43.
_________ food chains support larger ocean animals because _________ water has more nutrients.
a)
Antarctic/warmer
b)
Antarctic/colder
c)
Equatorial/colder
d)
Equatorial/warmer
44.
________ and _______ affect the ocean's density and cause the Global Conveyor Belt to travel
a)
gravity and the Coriolis Effect
b)
temperature and salinity
c)
wind and climate
d)
temperature and the Coriolis Effect
45.
The weather map shows the conditions across the United States. Based on the weather map which cit would see an increase in temperatures over the next 24 hours?
a)
Denver because it is raining here
b)
Minnaepolis, because a cold front is approaching
c)
Atlanta, because a warm front is approaching
d)
Houston, because it is in a high pressure system
46.
This symbol represents what they of front?
a)
Cold Front
b)
Warm Front
c)
Stationary Front
d)
Occluded Front
47.
This symbol represents what type of front?
a)
Cold Front
b)
Warm Front
c)
Stationary Front
d)
Occluded Front
48.
This symbol represents what type of front?
a)
Cold Front
b)
Warm Front
c)
Stationary Front
d)
Occluded
49.
Tornadoes and hurricanes are large areas of ____________ pressure.
a)
High
b)
Stable
c)
Low
d)
None of the above
50.
High pressure areas move toward areas of _____________________ pressure.
a)
Other High Area of Pressure
b)
Low Area of Pressure
c)
Stable Area of Pressure
d)
Warm Area of Pressure
51.
When two air masses collide, but neither is strong enough to push the other out of the way, a _____________________ front forms.
a)
Cold Front
b)
Warm Front
c)
Stationary Front
d)
Occluded
52.
Hot air ____________.
a)
rises
b)
falls
53.
What was the probable source of moisture for this hurricane?
a)
evaporation from the ocean
b)
winds from the coastal deserts
c)
transpiration from tropical jungles
d)
carbon dioxide from the atmosphere
54.
On September 18, Hurricane Gilbert changed direction. Which statement provides the most probable reason for this change?
a)
The amount of precipitation released by the storm changed suddenly.
b)
The air mass was cooled by the land surface.
c)
The amount of insolation received by the air mass decreased.
d)
The storm entered the prevailing westerlies wind belt.
55.
Which location is experiencing a southwest planetary wind?
a)
F
b)
B
c)
C
d)
A
56.
Is this a land or a sea breeze?
a)
land breeze
b)
sea breeze
57.
The curving of air to the right in the Northern hemisphere is caused by ___________ and is called the _________ effect.
a)
Earth's rotation...Coriolis
b)
Earth's revolution...Coriolis
c)
Earth's rotation...Doppler
d)
Earth's revolution...Doppler
58.
Due to the Coriolis Effect, water in the northern hemisphere moves
a)
clockwise
b)
counter clockwise
c)
both
d)
neither
59.
Due to the Coriolis Effect, water in the southern hemisphere moves
a)
clockwise
b)
counter-clockwise
c)
both
d)
neither
60.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
61.
Wha type of tide would this arrangement of earth-moon-sun create?
a)
full moon tide
b)
new moon tide
c)
neap tide
d)
spring tide
62.
What type of tides would this arrangement of earth-moon-sun create?
a)
neap tide
b)
spring tide
c)
new moon tide
d)
full moon tide
63.
Seawater is typically denser than freshwater due to seawater’s —
a)
Greater depth
b)
Lower freezing point
c)
Smaller mass
d)
Higher salinity
64.
Tides are caused primarily by the _______ gravity.
a)
Spring
b)
moon's
65.
As a result of the forces the act against Ekman transport, surface currents flow _______ in the Northern Hemisphere and _____ in the Southern Hemisphere.
a)
clockwise, counterclockwise
b)
counter clockwise, clockwise
c)
upward, downward
d)
downward, upward
66.
Which system takes oxygen into the body and eliminates carbon dioxide?
a)
immune
b)
nervous
c)
respiratory
d)
circulatory
67.
Which system provides shape and support, enables you to move, protects your internal organs, and stores minerals?
a)
skeletal
b)
muscular
c)
digestive
d)
nervous
68.
Which system enables the body to move, moves food through the digestive system, and keeps the heart beating?
a)
skeletal
b)
muscular
c)
digestive
d)
nervous
69.
Which system takes food into the body, breaks down food, and absorbs the digested materials?
a)
respiratory
b)
circulatory
c)
digestive
d)
excretory
70.
Which system detects information from the environment and directs the way your body responds to this information?
a)
excretory
b)
circulatory
c)
respiratory
d)
nervous
71.
Which system fights disease?
a)
excretory
b)
nervous
c)
immune
d)
digestive
72.
Which system collects and removes wastes?
a)
Muscular
b)
Circulatory
c)
Digestive
d)
Excretory
73.
Which system includes the lymph, lymph nodes, white blood cells, T and B cells?
a)
Excretory
b)
Digestive
c)
Immune
d)
Nervous
74.
Which system includes the heart and blood vessels?
a)
respiratory
b)
circulatory
c)
nervous
d)
skeletal
75.
Which three body systems allow you to move?
a)
muscular, skeletal, digestive
b)
nervous, respiratory, digestive
c)
nervous, muscular, skeletal
d)
Muscular, skeletal, circulatory
76.
Which two body systems deliver oxygen to your cells and take away carbon dioxide?
a)
respiratory and nervous
b)
circulatory and nervous
c)
circulatory and excretory
d)
Respiratory and circulatory
77.
Which two body systems work together to break down food and get rid of wastes?
a)
digestive and excretory
b)
digestive and circulatory
c)
excretory and respiratory
d)
nervous and digestive
78.
What is the level o organization known as a group of cells that work together?
a)
cells
b)
organ system
c)
organ
d)
tissue
79.
Earth's lithosphere consists of
a)
all the land and water on Earth's surface.
b)
molten rock and toxic gasses.
c)
a mix of nitrogen, carbon dioxide, and oxygen.
d)
the crusts, continents, and ocean basins.
80.
The main reason for the creation of desalination plants is
a)
to provide freshwater to support human activities.
b)
to promote jobs in high-tech industries and decrease agricultural careers.
c)
to expand trade exports of excess salt and brine procssing
d)
to provide economic stability to undeveloped countries.
81.
Scientists think that Pangaea separated due to
a)
climate changes
b)
continental drift
c)
weathering
d)
glaciers
82.
The Grand Canyon was slowly created by what kind of external force?
a)
water erosion
b)
glacial movement
c)
wind erosion
d)
rock erosion
83.
The sun activates the water cycle by
a)
condensing water in lakes and rivers
b)
causing weather systems to occur
c)
evaporating water from the surgaces of bodies of water
d)
causing precipitation
84.
A solar system consist of
a)
a group of planets revolving around the same sun
b)
a classification system for different types of suns
c)
process that measures a sun's physical features
d)
a group of stars such as our sun
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