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WorksheetsConner 8th Grade STAAR Review #1
Total questions: 72
Worksheet time: 53mins
Name
Class
Date
1.
The space, conditions, and all the living and nonliving things around an organism
a)
water cycle
b)
environment
c)
photosynthesis
d)
respiration
2.
all of the interacting members of the same species in an area
a)
overpopulation
b)
community
c)
population
d)
environment
3.
an inherited characteristic that provides a specific advantage to individuals that have it and becomes more common or pronounced in a population because of the advantage it providese
a)
migration
b)
adaptation
c)
impact
d)
interact
4.
An organism that consumes dead or nonliving biomass without need for internal digestion
a)
Scavenger
b)
Consumer
c)
Decomposer
d)
Producer
5.
A fire destroys all of the trees and plants in the forest. How might this affect the birds in the area?
a)
The birds will plant seeds and grow new trees.
b)
The birds will have more food to eat.
c)
The birds will plant seeds and grow new trees.
d)
The birds will have no place to build their homes.
6.
When a population thrives, it means that-
a)
the number of organisms is decreasing.
b)
it is growing strong and reproducing.
c)
the number of organisms is increasing.
d)
the number of organisms stays the same.
7.
When changes to an environment happen, animals-
a)
move.
b)
perish.
c)
adapt.
d)
all of the above
8.
How might cutting down the trees in a rainforest
environment affect the animals that live there?
a)
All of the animals that live there will perish rapidly.
b)
Animals will move to new areas to meet
their needs.
c)
The animals will make their homes
under ground.
d)
Animals that eat tree leaves
will become carnivores.
9.
a)
Soil
b)
Sunlight
c)
Water
d)
Oxygen
10.
When change occurs, organisms will:
a)
only adapt.
b)
adapt, migrate, or die.
c)
migrate or die.
11.
A foreign insect is introduced into the Texas. It eats a lot of leaves, and trees start to become leafless. Many different animals feed on the new insect, but even they cannot control its numbers. Eventually, trees begin to die. Why would a rapid increase of the new insect population cause certain species of herbivores to vanish or be fewer in number?
a)
They would not have enough to
eat.
b)
They
would not have enough space to live.
c)
They
would not have tree bark to eat.
12.
Scientists are concerned about overfishing of shark populations. Sharks feed on rays and rays feed on scallops. Without sharks, rays consume all the scallop beds. This situation demonstrates that:
a)
humans can improve an ecosystem by
removing predators.
b)
humans
can upset an ecosystem by removing species.
c)
reducing
the shark population increases the quantity of scallops that can be taken.
d)
sharks
are not important for the stability of the ecosystem.
13.
What does biodiversity mean?
a)
Only one species in an area.
b)
The different amount of species in an area
c)
All abiotic life
d)
Nitrogen fixation
14.
Which statement best explains how natural selection occurs?
a)
when adaptations help an organism reproduce and survive.
b)
when organisms are geographically isolated.
c)
when an organism’s offspring grow vestigial structures.
d)
when characteristics from the parent organism are inherited.
15.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
16.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
17.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
18.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
19.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
20.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
21.
A tapeworm inside a dog is
a)
competition
b)
predation
c)
commensalism
d)
parasitism
22.
A symbiotic relationship that involves species having to fight for something they both need or want
a)
competition
b)
predation
c)
commensalism
d)
parasitism
23.
Example of a decomposer
a)
fungus
b)
mouse
c)
plants
d)
frogs
24.
A tree is a ....
a)
composer
b)
decomposer
c)
producer
25.
Humans are considered...
a)
consumers
b)
decomposers
c)
producers
26.
Frogs are considered...
a)
consumers
b)
decomposers
c)
producers
27.
Grass is considered a ...
a)
consumer
b)
producer
c)
decomposer
28.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
29.
A connection of food chains with many food energy paths in an ecosystem is a ____________
a)
ecosystem
b)
food web
c)
environment
d)
population
30.
An animal that gets energy from eating both plants and animals is a
a)
herbivore
b)
carnivore
c)
omnivore
d)
autotroph
31.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
32.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
33.
Which is NOT an abiotic factor:
a)
soil
b)
air
c)
bacteria;
d)
water
34.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
35.
How do producers obtain energy?
a)
They conduct photosynthesis.
b)
They consume plants.
c)
They consume primary consumers.
d)
They consume secondary consumers.
36.
A consumer that hunts is called:
a)
a producer.
b)
an omnivore.
c)
a predator.
d)
a herbivore.
37.
Where do decomposers go in your food chain?
a)
at the beginning
b)
they don't belong in a food chain
c)
at the end
d)
at every level
38.
A food web can be broken down into several seperate
a)
food chains
b)
food pyramids
c)
producers
d)
consumers
39.
relationship in which two species live closely together
a)
resource
b)
mutualism
c)
succession
d)
symbiosis
40.
diagram that shows the energy available to each trophic level in an ecosystem; 10% is passed on to upper levels, the rest is lost as heat
a)
succession
b)
cellular respiration
c)
energy pyramid
d)
biochemical cycle
41.
largest number of individuals of a population that the environment can support
a)
carrying capacity
b)
primary succession
c)
denitrification
d)
mutualism
42.
symbiotic relationship in which one organisms benefits and the other organism is not affected
a)
invasive (non-native) species
b)
mutualism
c)
nitrogen fixation
d)
commensalism
43.
Step in the food chain, food web, or ecological pyramid
a)
trophic Level
b)
abiotic factors
c)
community
d)
ecosystem
44.
A large area that has a specific type of climate and certain types of plant and animal communities
a)
ecosystem
b)
habitat
c)
niche
d)
biome
45.
Where an organism lives
a)
habitat
b)
niche
c)
heterotrogh
d)
biosphere
46.
what is the gaseous layer of our Earth called?
a)
lithosphere
b)
biosphere
c)
atmosphere
47.
How many layers does the atmosphere have that I need you to know
a)
5
b)
3
c)
4
48.
The Thermosphere is the ____________ sphere above the Earth
a)
3rd
b)
4th
c)
1st
49.
The stratosphere is the ____________ layer above the Earth
a)
3rd
b)
2nd
c)
1st
50.
The sphere that burns up meteorites is
a)
the thermosphere
b)
The stratosphere
c)
The mesosphere
51.
What keeps our water in a liquid form for humans to use
a)
energy from the sun
b)
the jet stream
c)
meteoroids
52.
Which gas is most found in our atmosphere
a)
Nitrogen
b)
Oxygen
c)
Carbon dioxide
53.
Which is the most dense layer in our atmosphere filled with many air molecules
a)
Thermosphere
b)
Troposphere
c)
Hydrosphere
54.
Mass is the amount of what in an object
a)
volume
b)
space
c)
matter
55.
Mass is measured with
a)
a graduated cylinder
b)
a triple beam balance
56.
The density of water is
a)
1.0
b)
.1
c)
1.01
57.
This never changes
a)
the volume of an object
b)
the density of an object
58.
if something is _________ __________than 1.0 it will float in water.
a)
more dense
b)
less dense
59.
When you touch something hot ... heat is transferred through
a)
Radiation
b)
Conduction
c)
Convection
60.
When heat is transferred through the blowing winds it is known as heat transfer through
a)
Radiation
b)
Conduction
c)
Convection
61.
The ozone is found in what sphere
a)
Mesosphere
b)
Stratosphere
c)
Troposphere
62.
Satellites are found in what sphere
a)
Troposphere
b)
Thermosphere
63.
This is the amount of space an object takes up
a)
Mass
b)
Volume
64.
This protects us from getting to much radiation from the sun
a)
Thermosphere
b)
Ozone Layer
c)
Conduction
65.
Which way to the global winds blow in each hemisphere?
a)
east to west in Northern Hemisphere and west to east in the Southern Hemisphere
b)
west to east in Northern Hemisphere and east to west in Southern Hemisphere
c)
North to south in the Northern Hemisphere and south to north in Southern Hemisphere
d)
south to north in the Northern Hemisphere and north to south in the Southern Hemisphere
66.
Why are there global winds?
a)
because the cold air sinkes from the poles to the equator
b)
because the earth is rotating from east to west
c)
because the sun heats the air at the equator more than anywhere else on earth
67.
What is the Coriolis Effect and how does it effect global winds?
a)
Curving of winds due to rotation of earth curves wind counterclockwise in Northern Hemisphere and clockwise in the Southern Hemisphere
b)
Movement of ocean currents caused by earth rotation' counterclockwise in Northern Hemisphere and clockwise in Southern Hemisphere
c)
curve of global winds caused by global rotation clockwise in Northern Hemisphere and counterclockwise in Southern Hemisphere
68.
How does the Coriolis Effect influence hurricanes and cyclones
a)
determines how powerful they will be
b)
determines where they will go
c)
determines where they form
d)
determines the direction of the wind rotation
69.
Where do hurricanes form?
a)
In the pacific off South America
b)
In the Atlantic off South America
c)
In the Atlantic off Africa
d)
In the Gulf of Mexico
70.
The two most important things to hurricanes are
a)
high pressure and cool water
b)
low pressure and cool water
c)
low pressure and warm water
d)
high pressure and warm water
71.
In the Northern Hemisphere, hurricane winds blow
a)
harder than in the Southern Hemisphere
b)
counterclockwise
c)
clockwise
d)
less than in the Southern Hemisphere
72.
A __________ is the lines between air masses.
a)
low pressure system
b)
high pressure system
c)
front
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