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STEMSci8 Exam Review: Unit 1 Flashcards | StudBud
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STEMSci8 Exam Review: Unit 1
STEMSci8 Exam Review: Unit 1
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Scientific Method
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1
What is the atmosphere?
Located in the middle of the Earth
Whole mass of air surrounding Earth
Makes up all of the water on Earth
All of the above
2
What is the difference between the people who like cats and goldfish?
2
8
4
5
3
What is Symbiosis?
The birth of an organism
The interaction of different organisms in an environment
An organism that does not interact with others
When an organism has aged
4
Define biotic factors
Nonliving part of a environment that a organism interacts
Don’t know, don’t care
Any dinosaurs
living part of a environment that an organism interacts with
5
Population density refers to the
area inhabited by a population.
carrying capacity.
number of people in each age group.
number of individuals per unit area.
6
All of these are steps in the nitrogen cycle EXCEPT...
Nitrogen fixation
Infiltration
Decomposition of dead organic matter
Absorption by plants
7
What was a impact to science that Charles Darwin did
became the foundation of modern evolutionary studies
Made Chocolate pudding
Discovered the element radium
discoverd the double helix structure
8
All of the following are density dependent factors EXCEPT
parasitism
disease
predation
natural disasters
9
Describe where most fossil fuels are located.
Natural gas
Lakes
Tilted Towers
Deep beneath the Earth
10
How do experiments help scientist learn.
It helps them become famous
It only helps if they get thier hypothesis right.
It helps them answer questions about the world
It helps them learn only if they make new discoveries.
11
What role does the sun play in the ecosystem?
The source of energy for only producers
The source of all energy in an ecosystem
The source of energy for only consumers
The source of energy for only scavengers and decomposers
12
Which two factors increase population size?
births and emigration
births and immigration
deaths and emigration
deaths and immigration
13
What are ABIOTIC FACTORS?
Temperature and climate
Habitats
Non-living factors that affect living factors
Living factors
14
What is the total mass of living matter at each trophic level called?
biomatter
biomass
matter
mass
15
Only scientists
make observations
perform experiments
record data
research
16
A control group is used
to compare a variable to
for multiple trials
as data
as a conclusion
17
What is an example of predation?
a vine grows up a tree but does nothing to the tree
a fish swims through the ocean
a bee gets nectar from a flower and spreads pollen
A bird eats a walnut
18
What role do fungi play in an ecosystem?
Predator
Decomposer
Producer
Consumer
19
What is the role of a producer in an ecosystem?
eat other living organisms
feed on dead organisms
use energy from the sun to make food
decompose dead organisms
20
When you write down or record what is happening in your experiment it is called
an experiment
a conclusion
a hypothesis
an observatoin
21
mutualism, commensalism or parasitism
mutualism
commensalism
parasitism
22
Scientists share thier findings to....
kep their work secret
learn from each other
compete with each other
so they don't have to repeat it
23
Fossil Fuels formed from..
ancient remains of plants and animals
object from poured molten metal or other materal into a mold
Coal, oil, natural gas, and other fuels
a form by carving, casting, or other shaping techniques
24
What biome has the most biodiversity?
Grassland
Tropical Rain Forest
Temperate Forest
Desert
25
The Engineering Design Process
steps the engineer does before he starts the train.
a logical way to discover how things in the universe work.
a series of steps to find a solution to a problem.
a way to ask and answer scientific questions
26
Scientific evidence is:
supported by popular votes
what people like
how people feel about things
data that supports your findings
27
Which of the following tells you population density?
the number of frogs in a pond
the number of bacteria per square millimeter
the number of births per year
the number of deaths per year
28
Carrying Capacity Applies To:
All of the above
Animals
Humans
Plants
29
mutualism, commensalism or parasitism
mutualism
parasitism
commensalism
30
Where can we find biodiversity
In certain forests only
Anywhere
In certain rivers only
Only in cities
31
what is primary succession
the factors that limit dispersal of a species
series of changes were organisms in a ecosystem
a mini habitat within a larger one
series of changes were no organisms or soil exist
32
What are abiotic factors?
All interactions between different species
Another name for biomes
Nonliving part of a environment that a organism interacts
living part of a environment that an organism interacts with
33
What is a heterotroph?
An organism that CANNOT produce its own food so relies on other organisms
An animal that decomposes dead organisms
An organism that CAN produce its own food and does not rely on others
A non-living thing
34
Define PARASITISM
where one organism is harmed and nothing happens to the other organism
where both organisms benefit
where one organism benefits and nothing happens to the other organism
where one organism benefits and one organism is harmed
35
What is the role of the lizard in this food web?
producer
secondary consumer
tertiary consumer
primary consumer
36
a detrivore is also called a decomposer because they gain energy by eating dead or decaying things.
False
True
37
what is succession?
community structures destroyed over time
same community structures over time
changes in community structures over time
community structures built over time
38
The Carbon Cycle...
Affected by volcanoes
Has Combustion through burning fossil fuels
Relies on decomposing organisms
All of the above
39
When we gather information using the 5 senses this is called....
making observations
performing experiments
forming conclusions
stating a hypothesis
40
What impact does deforestation have on the carbon cycle?
Increase in the amount of cellular respiration performed by autotrophs
Increase in amount of CO2 in the atmosphere
Decrease in the amount of CO2 in the atmosphere
Deforestation has no impact on the carbon cycle
41
What is the dependent variable?
the time it takes to finish maze
type of food
type of fish
amount of food
42
what is mutualism?
a tiger
where on organsim benifits and the other does not
where both organisms benifit
43
Dependent variable
A variable (often denoted by z)
A variable (often denoted by x)
All of them
A variable (often denoted by y)
44
Predation is..
Animals of the same species fighting for the same recource
Prey eating predators
Predators eating prey
Animals of different species fighting for the same recource
45
An example of commensalism is...
A sea anemone and a clownfish
fleas and dogs
a butterfly and a flower
A clown fish and a sea anemone
46
Succession means...
A process involving a change in plant and animal communities
Moving in a straight line
Having success
Succeeding to someone
47
What is the role of the foxes in this food web?
herbivore
carnivore
producer
decomposer
48
Independent variable
a variable (often denoted by y)
a variable (often denoted by z)
All of them
a variable (often denoted by x)
49
What is biomass?
Nature and living organisms
Waste material from plants or animals that can be used.
Trash
Land
50
definition of carrying capacity
maximum number of organism that supports an ecosystem
biotic or abiotic factor that resist the growth of a population
A single self contained entity that performs basic functions
51
What is the hydrosphere?
All living organisms on earth
Earth’s entire solid body
Layer of gases surrounding Earth
Liquid water on Earth
52
The owl has what role in the ecosystem?
Tertiary Consumer
Secondary Consumer
Primary Consumer
Producer
53
Which would you do first in a scientific investigation?
write a hypothesis
organize data
form a queston or probem
draw conclusions
54
Precipitation occurs because
the droplets are too light for the air to hold
the droplets are too heavy for the air to hold
the droplets evaporate in the air
55
What is the primary role of decomposers in an ecosystem?
to compete with producers for energy and other resources
to control the population of producers and consumers
to recycle energy from dead producers and consumers
to provide a source of energy for producers
56
Nitrogen fixation is the process in the nitrogen cycle that...
Bacteria in the roots of plants turn N2 gas into usable form
Nitrogen is removed from dead organisms to be used
Bacteria in the soil turn nitrogen back into N2 gas
Nitrogen is fixed into the atmosphere
57
independent variable
not this one.
not this one either
the only factor that the scientist purposefully changes
the change that occurs in response to the (blank) varible
58
When we gather information with our senses - taste, touch, smell, see, hear - it is called.
performing experiments
making observations
forming conclusions
stating hypotheses
59
What is an ecosystem?
A community of only living things
A community of only one species
Community of living and nonliving things
A community of only nothing things
60
Symbiotic relationships are realationships between ________________.
Cars
Oceans
Organisms
Biomes
61
Define commensalism
When 1 organism benefits and the other is harmed.
Relationship where 1 organism benefits & one doesn't care.
When both organisms are harmed by the relationship.
When Harry gives Dobby a sock!
62
What is a Niche?
The second stage of an ecosystem when the soil is intact
A type of bird
An animal that eats meat
An animals role in their environment
63
What is Biodiversity?
Cells in a plant
Small insects and animals in a city
A disease
The variety of living organisims found in an area
64
Biodiversity increases ecosystem resilience.
False
True
65
What are the three main types of fossil fuels?
Coal, Gas, Water
Gas, Electric, Water
Smoke, Water, Fuel
Coal, Oil, Gas
66
What is a trophic level?
Each step in a food chain
The ultimate energy source
The transfer of energy
The direction energy and matter is transferred
67
Which is a density dependent factor?
forest fire
disease
volcanic eruption
flood
68
Which goes first in a scientific experiment?
hypothesis
data, tables and charts
conclusion
question or problem
69
What is transpiration?
None of the above
the loss of water from leaves
the female reproductive structure of a flower
how plants get their color
70
What are the products of the combustion of fossil fuels?
carbon dioxide and water vapour
glucose and water vapour
carbon dioxide and glucose
calcium carbonate and water vapour
71
Interpretting data: In the graph below what is the 2nd most popular sport in the school
soccer
basketball
other
softball
72
A variable can be controlled when:
When all your test groups are the same.
You compare a normal group to a group you are testing on.
When none of your test groups are the same.
When you make constant chages to the groups.
73
Fossil fuels are formed naturally.
no
yes
74
What Is Ecology?
the maximum amount that something can contain.
IDK
A Branch Of Biology That Involves Living things.
75
What is the Nitrogen Cycle??
Nitrogen being converted between chemicals
Sublimation
A Cycle
The Water Cycle
76
Define Population
A population is a group of living and non living things.
Animals and plants which have varying habitats
Is a cycle that contains a frog connected to other species.
Is a group of individuals which lives in the same area.
77
Biotic factors
Elk,water,horses,flowers
Flowers,grass,horses,elk
Sand,horses,flowers,grass
Purple,flowers,elk,grass
78
Which of the following are abiotic factors
soil
fungi
grass
microorganisms
79
What is the geosphere?
Surface of earth (rocks, minerals), and nonliving things
One of the layers of the earth
Study of plants and living things
Study of rocks and minerals
80
A controled experiment...
tests multiple variables
only tests one variable
Ussually only includes one trial
does not add any variables to the tests
81
What amount of energy is passed from one trophic level to another?
40%
10%
20%
50%
82
The first step in the scientific method a scientist usually takes is to
gather evidence
create a hypothesis
create a conclusion
create a testable question
83
Which of the follwoing is always an impaortant part of an experiment?
making a working model
making drawings of things observed
identifying and cotrolling variables
observing things in nature
84
Which of the following represents the carrying capacity of this population?
D
B
The dotted line
A
85
parasitism , commensalism , and mutualism are types of
niche
extinction
symbiosis
prey
86
The number of organisms an ecosystem can support
exponential growth
logistic growth
carrying capacity
density dependent
87
what is biosphere??
gasses surrounding the Earth
crust and upper mantle of Earth
all waters of Earth
places on Earth occupied by living organisms
88
What is the independent variable?
type of food
amount of food
how fast fish complete maze
type of fish
89
The carrying capacity for the rabbit population is
40
not enough information
60
80
90
All the the following are density independent factors except
competition
weather
natural diseasters
seasonal cycles
91
What would happen if scientist didn't publish thier findings in journals?
People could steal thier work
Other scientists would not benefit from thier work.
They would never be famous
They could get too famous
92
A sunflower has what role in an ecosystem?
Producer
2nd level Consumer
Decomposer
1st level consumer
