Worksheets8TH GRADE STAAR REVIEW- SCIENCE
Total questions: 72
Worksheet time: 1hrs 7mins
Name
Class
Date
1.
Organisms who receive their energy by consuming other organisms.
a)
Chloroplast
b)
Heterotroph
c)
Autotroph
d)
Phototropism
2.
The part of a cell that contains the chromosomes (wound up DNA) in eukaryotic cells.
a)
Chloroplasts
b)
Cell Wall
c)
Nucleus
d)
Homeostasis
3.
The genetic code for all of your traits.
a)
Nucleus
b)
DNA
c)
Chloroplast
d)
Recessive gene
4.
The organelle inside a plant cell that converts sunlight into energy.
a)
Chloroplast
b)
Photosynthesis
c)
Parasite
d)
Cell Wall
5.
The part of a plant cell that is rigid & permeable.
a)
Chloroplast
b)
Turgor Pressure
c)
Cell Wall
d)
Phototropism
6.
The term used to define a cell that has a nucleus containing DNA.
a)
Prokaryote
b)
Eukaryote
c)
Autotroph
d)
Homeostasis
7.
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
8.
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
9.
A cell without a nucleus.
a)
Eukaryotic
b)
Prokaryotic
c)
Heterotroph
10.
Organisms who receive energy from dead or decaying matter.
a)
Prokaryotic
b)
Omnivore
c)
Heterotrophic
d)
Decomposers
11.
Rebuilding an ecosystem after a catastrophic event has occurred and soil is present.
a)
Primary Succession
b)
Secondary Succession
c)
Natural Selection
d)
Adaptations
12.
The trait that is always expressed. It will hide or mask the other trait.
a)
Recessive
b)
Dominant
c)
Natural Selection
d)
Homeostasis
13.
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
14.
The trait that is hidden or masked by the other trait.
a)
Dominant
b)
Eukaryotic
c)
Recessive
d)
Homeostasis
15.
Organisms who make their own energy by taking in light or chemicals.
a)
Heterotroph
b)
Phototropism
c)
Autotroph
d)
Heterotroph
16.
Successful traits are passed onto offspring through natural circumstances.
a)
Natural Selection
b)
Primary Succession
c)
Secondary Succession
d)
Dominant
17.
The response of a plant due to the stimuli of light energy.
a)
Parasitic
b)
Chloroplast
c)
Photosynthesis
d)
Phototropism
18.
This type of organism feeds on a host organism, causing harm to the host.
a)
Decomposer
b)
Parasite
c)
Heterotroph
d)
Carnivore
19.
The organism's ability to maintain equilibrium in their body.
a)
Homeostasis
b)
Heterotroph
c)
Prokaryotic
d)
Autotrophic
20.
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
21.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them.
b)
They may eat more than one other organism.
c)
This organism gets its energy from multiple sources.
d)
They have no resources available to them.
22.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
23.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
24.
What does a biotic do?
a)
do nothing
b)
move, repopulate, and live
c)
stand still
d)
dead things
25.
if an eagle/hawk population goes down what happens?
a)
predators are booming
b)
nuke
c)
Mouse population explodes
d)
nothing
26.
What does a limiting factor do?
a)
makes a population grow large
b)
stops a population from growing large
c)
helps organisms adapt to abiotic factors
d)
provides geographical boundaries for migration
27.
If a disease were to infect frogs and kill them off what would be the likely impact of this system?
a)
Decrease the amount of flies
b)
Increase the amount of frogs
c)
Decrease the amount of algae
d)
Increase the amount of algae
28.
anything that an organism needs to live, ex. food, water, space
a)
carrying capacity
b)
resource
c)
succession
d)
denitrification
29.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
30.
A dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?
a)
Coleoptera
b)
Heteroptera
c)
Diptera
d)
Lepidoptera
31.
Using this dichotomous key, identity the name of the circled fish.
a)
band-tail puffer
b)
spotted goat fish
c)
peacock flounder
d)
trumpet fish
32.
The _______________________ consists of blood, blood vessels, and the heart.
a)
respiratory system
b)
circulatory system
c)
urinary system
33.
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
34.
Where is DNA stored in a cell?
a)
Lysosomes
b)
Golgi Complex
c)
Ribosomes
d)
Nucleus
35.
Which organelle is only found in a plant cell?
a)
nucleus
b)
chloroplast
c)
mitochondria
d)
cell membrane
36.
Which kingdom has all multicellular organisms that move to catch their food?
a)
Protist
b)
Fungi
c)
Plant
d)
Animal
37.
Cells that do not have a true nucleus are called....
a)
eukaryote
b)
prokaryote
c)
unicellular
d)
multicellular
38.
A greater applied force is required to move an object with a greater mass than one with a smaller mass.
a)
True
b)
False
39.
If two forces act on an object in the same direction, the net force is the _____________
a)
the difference between the two forces
b)
the sum of the two forces
c)
Only one of the forces acts on the object
d)
DOOMSDAY!
40.
Total distance divided by total time is
a)
average speed
b)
constant speed
c)
instantaneous speed
d)
acceleration
41.
Pushing a child on a swing is easier than pushing an adult on the same swing.
a)
1st Law
b)
2nd Law
42.
Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?
a)
first
b)
second
c)
third
d)
fourth
43.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion.
d)
Friction
44.
Which of the following IS NOT an example of work being done?
a)
Pushing a cart in a store
b)
Shooting a basketball
c)
A stand off in tug of war
d)
Running a mile
45.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
46.
What kind of energy is in gasoline in a car tank (car is not on)?
a)
Potential
b)
Kinetic
47.
What is happening at A?
a)
Stationary
b)
Accelerating
c)
Slower steady speed; moving away from the starting position
d)
Steady speed; returning to start position
48.
Mechanical Energy is transferred to _____ Energy.
a)
Solar
b)
Mechanical
c)
Electrical
d)
Potential
49.
What best describes the energy conversion that occurs when you turn on a flashlight?
a)
electrical to thermal to light
b)
chemical to electrical to light
c)
nuclear to electrical to thermal
d)
kinetic to light to thermal
50.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
51.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
52.
Which season is taking place in the NORTHERN Hemisphere in Position 3?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
53.
As the Earth rotates, the part of the Earth facing the sun has ________.
a)
an axis
b)
darkness (night)
c)
daylight
d)
winter
54.
What phase comes BEFORE this one?
a)
Waxing Crescent
b)
Waxing Gibbous
c)
Waning Gibbous
d)
Waning Crescent
55.
What phase comes AFTER this one?
a)
Waning Crescent
b)
Waning Gibbous
c)
Waxing Crescent
d)
Third Quarter
56.
As the moon's shape appears to get smaller, we say that the moon is _.
a)
swelling
b)
waxing
c)
waning
d)
disappearing
57.
The cycle of the moon lasts about a _.
a)
day
b)
year
c)
week
d)
month
58.
A collection of stars, dust, and gas bound together by gravity is...
a)
Universe
b)
Solar System
c)
Planet
d)
Galaxy
59.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
60.
Scientist use Light years to measure objects in space rather than units such as Miles or Kilometers because of how massive the Galaxy and Universe is.
a)
True
b)
False
61.
Hot clouds of gaseous elements and compounds that act as nurseries for stars
a)
Galaxies
b)
Star
c)
Nebulae
d)
Black holes
62.
The illustration provided shows four locations in or near the Milky Way Galaxy. Which of the labeled locations shows the approximate position of the Sun?
a)
W
b)
X
c)
Y
d)
Z
63.
Compared to the rest of the stars, our sun is considered...
a)
Extremely Large and Cold
b)
Small with a medium temperature
c)
Medium size with medium temperature
64.
electromagnetic waves with the longest wavelengths are
a)
gamma rays
b)
x-rays
c)
infrared waves
d)
radio waves
65.
The Himalayas in Asia are an example of what type of plate boundary?
a)
divergent
b)
continent-to-continent convergent
c)
ocean-to-continent convergent
d)
transform
66.
A mid-ocean ridge occurs at a ________ plate boundary.
a)
transform
b)
convergent
c)
divergent
67.
Determine the contour interval:
a)
5 m
b)
10 m
c)
15 m
d)
20 m
68.
What do close contour lines represent on a map?
a)
waterfall
b)
steep area
c)
gradual area
d)
river
69.
Low pressure will usually bring what kind of weather?
a)
Sunny
b)
Calm
c)
Stormy
70.
Which type of front often produces thunderstorms?
a)
cold
b)
stationary
c)
warm
d)
occluded
71.
A _____________ tide occurs when the moon, sun, and Earth are aligned. This is a period of the highest high tides and lowest low tides.
a)
neap
b)
spring
c)
slack water
d)
ebb
72.
Oceans have a big impact on climate because they move _________ around the world
a)
trash
b)
heat
c)
water
d)
salt
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