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Worksheets8th Grade STAAR Review
Total questions: 105
Worksheet time: 1hrs 22mins
Name
Class
Date
1.
This part of the atom has very little mass but takes up most of the space of the atom (contains negatively charged particles).
a)
Positron
b)
Proton
c)
Electron
d)
Neutron
2.
Find Magnesium on the periodic table. An atom of Magnesium is most likely to bond with which of the following elements?
a)
Berylium
b)
Oxygen
c)
Helium
d)
Iron
3.
Which of the following is the best example of an element, not a compound?
a)
NO
b)
Br2
c)
NH3
d)
CO2
4.
How Many Valence Electrons does this family of elements have?
a)
1
b)
2
c)
3
d)
4
5.
There is competition for resources between:
a)
Brittle Brush and Saguaro Cactus
b)
Armadillo and Peccary
c)
Stomach Worm and Gila Monster
d)
Banded Gecko and Peccary
6.
The part of a Cell in a Eukaryote that contains the genetic information is called
a)
Cell Membrane
b)
Vacuole
c)
Nucleus
d)
Mitochondria
7.
Which organism is the producer in this food web?
a)
Zooplankton
b)
Small Fish
c)
Filter Feeders
d)
Phytoplankton
8.
What does cell theory say?
a)
All Living things are made of cells
b)
All cells come from pre-existing cells
c)
cells are the basic unit of life
d)
All of these answers are correct
9.
Mistletoe is a plant that grows attached to the branches of trees or shrubs. The presence of mistletoe negatively affects the growth of trees because it robs the tree of nutrients and water. Which of the following correctly describes the role of mistletoe?
a)
Parasite
b)
Prey
c)
Host
d)
Predator
10.
How much force is required to accelerate a 250 kg box to 6 m/hr2?
a)
1500 N
b)
.024 N
c)
41.666 N
d)
15,000 N
11.
What energy transformation occurs in a flashlight that is powered by batteries
a)
Mechanical-> Electrical-> Radiant
b)
Chemical-> Electrical-> Radiant
c)
Electrical-> Chemical -> Radiant
d)
Radiant -> Chemical -> Electrical
12.
A space shuttle only has enough fuel to get it out of Earth’s atmosphere. Once the space shuttle is in space (where there is no friction/ air resistance) it will continue moving even without any fuel because of ________.
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
d)
The Law of Space and Redundancy Law
13.
What is the average speed walked in the walk-a-thon?
a)
810 m/s
b)
90 m/s
c)
10 m/s
d)
9 m/s
14.
Which of the following is the best model of earth’s revolution?
a)
A spinning top
b)
a marble traveling around a beach ball at an angle
c)
a basketball spinning on an 8th grader's finger
d)
a cat chasing a squirrel
15.
At which two letters above are the north and south hemispheres experiencing equal hours of day and night because neither pole is tilted toward or away from the sun?
a)
A and B
b)
C and D
c)
B and D
d)
A and C
16.
What lunar phase would occur a week after a new moon?
a)
Last Quarter
b)
Full Moon
c)
New Moon
d)
First Quarter
17.
This picture shows the moon and the earth during a _______ Moon and a ______ Tide.
a)
Full....Neap
b)
New...Spring
c)
Full...Spring
d)
New...Neap
18.
Students drew contour lines over landforms in science class. The V shapes formed when the lines meet a river bend to indicate...
a)
how fast the river is moving
b)
where the river started
c)
Which direction the river is flowing
d)
whether or not the river will bend
19.
What geographic feature can be indicated by the arrow on the map?
a)
Gradual Drop
b)
Flat Land
c)
Cliff
d)
Depression
20.
Seafloor spreading and rift valleys occur at _________ plate boundaries
a)
Convergent
b)
Divergent
c)
Transform
d)
Subduction Zones
21.
Fault lines occur at ______ plate boundaries.
a)
Convergent
b)
Divergent
c)
Transform
d)
Subduction Zones
22.
Which 2 cell structures are the main difference between plant cells and animal cells?
a)
Cell wall and Cell Membrane
b)
Vacuole and Mitochondria
c)
Cell Wall and Chloroplast
d)
Nucleus and Cytoplasm
23.
This movement of air as it heats and cools (due to the uneven heating of the earth by the sun) is responsible for the creation of wind.
a)
Conduction
b)
Radiation
c)
Convection
d)
Jetstream
24.
How did the weather in Texas change as a result of the front that just came through?
a)
Temperatures dropped and there were storms
b)
Temperatures rose and there was light rain
c)
Temperatures rose and skies were sunny and clear
d)
The weather remained the same
25.
What kind of skies can the New Orleans area expect in the upcoming days?
a)
Sunny and clear
b)
Rainy and cold
c)
Warm and rainy
d)
Cold and dry
26.
All weather on earth is due to the uneven heating of the earth by …
a)
Your Microwave
b)
Wind
c)
Greenhouse Gases
d)
The Sun
27.
Successful traits are passed onto offspring through natural circumstances.
a)
Natural Selection
b)
Primary Succession
c)
Secondary Succession
d)
Dominant
28.
The response of a plant due to the stimuli of light energy.
a)
Parasitic
b)
Chloroplast
c)
Photosynthesis
d)
Phototropism
29.
This type of organism feeds on a host organism, causing harm to the host.
a)
Decomposer
b)
Parasite
c)
Heterotroph
d)
Carnivore
30.
The organism's ability to maintain equilibrium in their body.
a)
Homeostasis
b)
Heterotroph
c)
Prokaryotic
d)
Autotrophic
31.
The process where plants use the light from the sun to convert carbon dioxide and water into glucose.
a)
Phototropism
b)
Chloroplast
c)
Photosynthesis
d)
Prokaryotic
32.
Organisms who receive their energy by consuming other organisms.
a)
Chloroplast
b)
Heterotroph
c)
Autotroph
d)
Phototropism
33.
The part of a cell that contains the chromosomes (wound up DNA) in eukaryotic cells.
a)
Chloroplasts
b)
Cell Wall
c)
Nucleus
d)
Homeostasis
34.
The genetic code for all of your traits.
a)
Nucleus
b)
DNA
c)
Chloroplast
d)
Recessive gene
35.
The organelle inside a plant cell that converts sunlight into energy.
a)
Chloroplast
b)
Photosynthesis
c)
Parasite
d)
Cell Wall
36.
The part of a plant cell that is rigid & permeable.
a)
Chloroplast
b)
Turgor Pressure
c)
Cell Wall
d)
Phototropism
37.
The term used to define a cell that has a nucleus containing DNA.
a)
Prokaryote
b)
Eukaryote
c)
Autotroph
d)
Homeostasis
38.
A force exerted outward on a cell wall by the water contained on a cell.
a)
Turgor Pressure
b)
Adaptation
c)
Cell Wall
d)
Photosynthesis
39.
The building up of an ecosystem after lava or glaciers have left nothing but rock.
a)
Secondary Succession
b)
Primary Succession
c)
Natural Selection
d)
Adaptation
40.
A cell without a nucleus.
a)
Eukaryotic
b)
Prokaryotic
c)
Heterotroph
41.
Organisms who receive energy from dead or decaying matter.
a)
Prokaryotic
b)
Omnivore
c)
Heterotrophic
d)
Decomposers
42.
Rebuilding an ecosystem after a catastrophic event has occurred and soil is present.
a)
Primary Succession
b)
Secondary Succession
c)
Natural Selection
d)
Adaptations
43.
The trait that is always expressed. It will hide or mask the other trait.
a)
Recessive
b)
Dominant
c)
Natural Selection
d)
Homeostasis
44.
Behavior patterns, or internal and external structures which allow an organism to survive and reproduce in their environment successfully.
a)
Adaptations
b)
Homeostasis
c)
Recessive traits
d)
Natural Selection
45.
The trait that is hidden or masked by the other trait.
a)
Dominant
b)
Eukaryotic
c)
Recessive
d)
Homeostasis
46.
Organisms who make their own energy by taking in light or chemicals.
a)
Heterotroph
b)
Phototropism
c)
Autotroph
d)
Heterotroph
47.
What is the best title for the chart below?
a)
Characteristics of Metals in the Periodic Table
b)
Items that Conduct Electricity
c)
Highly Reactive Elements
d)
Organic Compounds
48.
The tendency of an element to react with other elements to produce compounds.
a)
Chemical change
b)
Neutrality
c)
Reactivity
d)
Valence
49.
The number of protons in the atoms of a particular element that is unique only to that element.
a)
Atomic Mas
b)
Atomic Number
c)
Proton Number
d)
Mole
50.
A positively charged subatomic particle located in the nucleus and has an atomic mass of 1.
a)
Neutron
b)
Valence
c)
Proton
d)
Electron
51.
A collection of orbitals around the nucleus, each having its own energy level.
a)
Proton Shells
b)
Electron Shells
c)
Orbital Shells
d)
Nucleic Shells
52.
Felipe is observing how acetic acid (vinegar) and sodium bicarbonate (baking soda) react with one another in a volcano model. What evidence can Felipe look for to indicate a chemical reaction has taken place?
a)
The volume of the acetic acid increases.
b)
The density of the baking soda decreases.
c)
Gas bubbles are produced.
d)
The baking soda is dissolved.
53.
Which of the following pictures is an example of a chemical change?
a)
Wood burning in a fireplace
b)
ice melting in water in a beaker
c)
a cracked rock
d)
boiling water on a hotplate
54.
Consider the two examples below. In which instance is more work done?
a)
Example A
b)
Example B
c)
Example A and Example B represent the same amount of work.
d)
Neither example represents any work done.
55.
A tennis ball being dropped, then bouncing upward after hitting the ground is an example of:
a)
the law of inertia
b)
the law of force and acceleration
c)
the law of action-reaction
d)
the law of reflection
56.
Josh Hamilton crushes a home run over the center field wall. The ball is struck with a force of 20 N. How much force does the ball apply to the bat?
a)
5N
b)
10 N
c)
20 N
d)
40 N
57.
Which positions of the Moon will produce the highest tides on Earth?
a)
A and B
b)
A and C
c)
B and C
d)
B and D
58.
Even though the Sun has a mass 27 million times greater than the Moon, the Moon has a greater impact on the Earth’s tides. This is because:
a)
The Moon is much closer to the Earth.
b)
The Moon has more gravitational force than the Sun.
c)
The Moon is made of solid elements instead of gases.
d)
The Moon has a faster orbital period.
59.
What phase of the moon will you see in this situation?
a)
A
b)
B
c)
C
d)
D
60.
Sarah observes and records these moon phases.
Which phase will she observe on Night 15?
Which phase will she observe on Night 15?
a)
A
b)
B
c)
C
d)
D
61.
Which arrows show the revolution of a body in space?
a)
Arrows 2 and 3
b)
Arrows 1 and 2
c)
Arrows 1 and 3
d)
Arrows 3 and 4
62.
The following picture is the Horsehead Nebula and is located about 1,500 light years from Earth in the constellation Orion. What is most likely occurring in the Horsehead Nebula?
a)
new star formation
b)
formation of black holes
c)
star explosions like supernovas
d)
the birth of new galaxies
63.
The stars we see at night are:
a)
in the Milky Way galaxy
b)
in the solar system
c)
in galaxies other than the Milky Way
d)
both A and C
64.
Use this model of the Hertzsprung-Russell diagram to answer question.
An astronomer discovers a new star that is very hot, but not very bright. What type of star did she discover?
An astronomer discovers a new star that is very hot, but not very bright. What type of star did she discover?
a)
a red giant
b)
a young star on the main sequence
c)
an old star on the main sequence
d)
a white dwarf
65.
Which of the following galaxies is most like our own Milky Way?
a)
A
b)
B
c)
C
d)
D
66.
In the table above, what would be an appropriate title for column C?
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Solid Compounds
67.
The arctic hare in the picture is shown camouflaged in the snow from possible predators. However, when summer arrives, what trait(s) will allow this hare to avoid predators?
a)
its long ears for keen hearing and fast hind legs
b)
the ability to eat lots of grass
c)
its relatively small size in comparison with predators
d)
the thickness of its fur
68.
In the graph below, what is a possible reason why the population of “gray” peppered moths in England changed?
a)
Human pollution during the industrial revolution changed the moths’ natural habitat.
b)
The number of predators increased.
c)
The moths’ food source vanished.
d)
The moths were unable to reproduce.
69.
Jessie catches a fish with the following characteristics:
√Oval-shaped body
√No barbels
√Forked tail fin
This fish is most likely a:
√Oval-shaped body
√No barbels
√Forked tail fin
This fish is most likely a:
a)
catfish
b)
rainbow trout
c)
bluegill
d)
largemouth bass
70.
The heart pumps blood to the lungs, allowing the blood to become oxygenated and then carrying the oxygen to the cells within the body. This describes a key interaction between what two body systems?
a)
endocrine and skeletal systems
b)
circulatory and respiratory systems
c)
digestive and circulatory systems
d)
nervous and respiratory systems
71.
Which of the following characteristics best describe the animal kingdom?
a)
heterotrophic, prokaryotic, unicellular
b)
autotrophic, eukaryotic, multicellular
c)
heterotrophic, eukaryotic, multicellular
d)
heterotrophic, prokaryotic, multicellular
72.
In the plant cell below, which arrow is pointed to the organelle that contains the genetic material for inherited traits?
a)
Structure A
b)
Structure B
c)
Structure C
d)
Structure E
73.
The picture below shows how runoff from an urban location is routed to the ocean. Pollution in the runoff can damage ocean ecosystems. A likely cause of the runoff is:
a)
larger amounts of farmland to support more people
b)
pavement and concrete prevents water from entering the groundwater
c)
increased rainfall in urban areas
d)
sediments being deposited in the streams and rivers around urban areas
74.
What is the net force acting on this balloon?
a)
7 N to the right
b)
10 N to the right
c)
6 N to the left
d)
4 N to the right
75.
Suppose you are riding a bicycle uphill and are pedaling at a constant speed. The force of your pedaling is equal to and opposite of:
a)
the force of gravity
b)
the force of friction between the tires and the road
c)
both the force of gravity and friction
d)
neither the force of gravity and friction
76.
Annabelle walks to school every day from her house. The diagram below shows the distance from her house to school measured in 1 km increments. If it takes her 30 minutes to walk to school, what was her average speed?
a)
4 km/hr
b)
7.5 km/hr
c)
8 km/hr
d)
0.13 km/hr
77.
A train is traveling away from you at a constant speed. What would a distance-time graph look like for this train?
a)
A
b)
B
c)
C
d)
D
78.
Conservationists argue that we should not kill every snake we see. What is the reasoning behind this argument?
a)
Killing snakes will also decrease the population of their natural prey.
b)
A decrease in the snake population will lead to an increase in more venomous reptiles.
c)
The population of its natural prey, such as mice and insects, will increase.
d)
The number of snakes is directly related to the coyote population.
79.
Which does not describe a predator/prey behavior?
a)
Dolphins working in a team to roundup a school of fish.
b)
An eagle soaring above a field looking for a mouse.
c)
A polar bear walking on the sea ice searching for a seal.
d)
A barnacle attaching itself to a whale.
80.
Which of the following statements is NOT true about the organism that completes this food chain?
a)
It derives its energy directly from the sun.
b)
It has sharp claws or teeth.
c)
It depends on other animals for energy.
d)
It can move from one place to another.
81.
Gradual and orderly process of change in an ecosystem until a stable community is established.
a)
Ecological Succession
b)
Biodiversity
c)
Adaptation
d)
Competition
82.
Variety of life
a)
Natural Selection
b)
Ecological Succession
c)
Interdependence
d)
Biodiversity
83.
The mass of a car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/s2?
a)
1000 ÷ 3
b)
3 ÷ 1000
c)
1000 x 3
84.
What is the force on a 1000 kg elevator that is falling freely at 9.8 m/s2? To solve this problem you must do -
a)
1000 ÷ 9.8
b)
9.8 ÷ 1000
c)
1000 x 9.8
85.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
86.
Warm water carries more ________ that is needed to create storm systems
a)
heat
b)
waves
c)
energy
d)
salt
87.
The movement of warm ocean water from the equator to the poles, and the reverse movement of cold water from the poles to the equator is an example of this.
a)
subduction
b)
convection
c)
plate formation
d)
hurricanes
88.
Hurricanes and similar storm systems begin over oceans. The map below shows average surface temperatures of the oceans in the summer.
Based on the map, which area probably produced the most violent storm systems?
Based on the map, which area probably produced the most violent storm systems?
a)
Area 1
b)
Area 2
c)
Area 3
d)
Area 4
89.
New crust is formed due to plate movement in the ocean. This phenomenon is called
a)
convergent with subduction
b)
a world wonder
c)
sea floor spreading
d)
transform boundaries
90.
What type of boundary plate can create earthquakes?
a)
convergent
b)
divergent
c)
convergent with subduction
d)
transform
91.
The points labeled W and Y on the topographic map below show the campsites of two families.Each family hiked to the elevation on the map marked X. The arrows show the paths taken by both families.
What was the change in elevation, to the nearest ten meters, for the family that took thesteepest path to Point X?
What was the change in elevation, to the nearest ten meters, for the family that took thesteepest path to Point X?
a)
100
b)
600
c)
60.0
d)
120
92.
What is the one condition that is necessary for a hurricane to form?
a)
Warm ocean water
b)
A strong cold front
c)
Cold ocean water
d)
A strong warm front
93.
A student wants to use a spinning basketball to model the day-and-night cycle on Earth.
What should the student do in order to best model the cause of the day-and-night cycle?
What should the student do in order to best model the cause of the day-and-night cycle?
a)
Spin the ball in different directions
b)
Tilt the ball while it is spinning
c)
Paint one half of the ball black and the other half white
d)
Shine a bright light on one side of the ball
94.
On July 4, 1776, the American colonies declared their independence. The table shows the lunar phases for June 1776.
a)
Waning gibbous
b)
Waxing gibbous
c)
Waning crescent
d)
Waxing crescent
95.
Why does the sun appear to be brighter than a giant red star when viewed from Earth?
a)
The sun is a different color than the runaway star.
b)
The sun is older than the runaway star.
c)
The sun is closer to Earth than the runaway star
d)
The sun is made of different elements than the runaway star
96.
Two stars are identified on the Hertzsprung-Russell diagram below.
Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?
Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?
a)
Star 1 is cooler and less bright than Star 2
b)
Star 1 is hotter and brighter than Star 2.
c)
Star 1 is cooler and brighter than Star 2.
d)
Star 1 is hotter and less bright than Star 2.
97.
_________ states that energy cannot be created or destroyed, but only transformed into different forms
a)
Law of Conservation of Mass
b)
Law of Conservation of Energy
98.
Digestive Process:
Digestive juices in the stomach breaks down the food
Digestive juices in the stomach breaks down the food
a)
Physical Change
b)
Chemical Change
99.
Digestive Process:
Swallowing the food from the mouth down to the esophagus to the stomach
Swallowing the food from the mouth down to the esophagus to the stomach
a)
Physical Change
b)
Chemical Change
100.
What is found in the nucleus of atoms?
a)
Protons and electrons.
b)
Protons, neutrons, and electrons.
c)
Protons and neutrons.
d)
Neutrons and electrons.
101.
Where are the most nonmetals located on the periodic table?
a)
In the bottom row
b)
On the left side and in the middle
c)
On the right side
d)
In the top row
102.
a body system that controls growth and homeostasis by secreting hormones from glands.
a)
skeletal system
b)
nervous system
c)
endocrine sytem
d)
integumentary system
103.
The _______________________ consists of blood, blood vessels, and the heart.
a)
respiratory system
b)
circulatory system
c)
urinary system
104.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
105.
What does Abiotic mean?
a)
Living
b)
Nonliving
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