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WorksheetsFinal Review
Total questions: 50
Worksheet time: 38mins
What is a hypothesis?
An educated guess
An opinion
A proposed explanation that gets tested
All the controlled experiments
A scientist wants to determine whether something is living or non-living. Which of the following is a characteristic that a scientist could use to tell if something is living?
The object can move
The object is made of cells with DNA
The object gets bigger over time
The object gets smaller over time
The ____________________ variable is what is tested in an experiment and controlled by the scientist.
Independent
Dependent
Fixed
Controlled
The results of an experiment that the scientist does not have control over
Independent variable
Dependent variable
Fixed variable
Controlled variable
Which sphere contains all the liquid and frozen water on the Earth?
Hydrosphere
Biosphere
Atmosphere
Geosphere
Which sphere has all the living things on Earth?
Biosphere
Geosphere
Hydrosphere
Atmosphere
Which sphere is made of all the gasses that surround the Earth?
Biosphere
Hydrosphere
Atmosphere
Geosphere
Which statement best describes climate?
Long term condition in the environment
Temporary condition in the environment
Permanent condition in the environment
Climate and weather are the same
Climate includes…
Temperature, wind, and time of year
Temperature, wind, and rain
Wind, rain, and time of year
Wind, rain, and, latitude
Non-living factors in an ecosystem are known as...
Biotic
Biosphere
Abiotic
Organisms
Producers include all the following, except ________________________.
Algae
Phytoplankton
Plants
Animals
Omnivores are characterized by the fact that they consume __________________________.
Only meat
Only plants
Meat and plants
They get energy from the sun
What is the correct flow of energy through an ecosystem?
Sunlight -> producers -> tertiary consumer -> primary consumers -> secondary consumers
Sunlight -> producers -> primary producers -> tertiary consumer -> primary consumers
Sunlight -> producers -> primary consumers -> secondary consumers -> tertiary consumer
Sunlight -> producers -> secondary consumers -> primary consumers -> tertiary consumer
All biotic and abiotic factors and the interactions between them in an area make up a(n)
Species
Population
Ecosystem
Community
Energy in ecosystems starts with
Air
Water
Sunlight
Plants
A is a physical environment where a species lives
Niche
Nest
Biosphere
Habitat
A is all of the populations of different species that live in the same area and interact with one another.
Species
Community
Population
Ecosystem
are organisms that can produce their own food.
Producer
Consumer
Heterotroph
Herbivore
Another name for a producer is and another name for a consumer is .
Autotroph;heterotroph
Autotroph;herbivore
Heterotroph;autotroph
Heterotroph; consumer
Organisms that break down the remains of dead autotrophs and heterotrophs are called...
Producers
Carnivores
Decomposers
Omnivores
The feeding positions in a food chain or web are called .
Energy levels
Food chain levels
Trophic levels
Food web levels
Only about percent of the energy at one level of an energy pyramid is available to the next level.
90
10
50
20
Why are there fewer organisms at higher trophic levels?
Because they don’t reproduce as fast
Because there is less available energy
Because they eat less
Because there is more available energy
is the total mass of organisms at a trophic level.
Energy
Biomass
Population
Trophic level
How much energy would the 3rd level consumers receive in the energy pyramid above?
.1 Kcal
1 Kcal
10000 Kcal
.5 Kcal
The two main factors affecting population growth are the rate (b) and rate (d).
Death;birth
Birth;death
Growth;decline
Decline;growth
Individuals entering a population is referred to as .
Emigration
Immigration
Death rate
Dispersal
In the graph above, line A would represent growth.
Logistic
Ideal
Exponential
Slow
In the graph above, line B would represent growth.
Logistic
Ideal
Exponential
Slow
In the graph above, would line A or B represent a population growing under ideal conditions?
A
B
The (K) is the largest population size that can be supported in an area without harming the environment.
Population limit
Community limit
Carrying capacity
Carrying maximum
What type of factor is available food supply?
Density-dependent
Density-independent
Carrying capacity
Logistic growth
Symbiosis is:
A relationship between animals and their habitat
A relationship between two organisms that live in fear of each other
A relationship between species in a community that have no interaction
A relationship between two species that live in close proximity
Which of the following symbiotic relationships is considered parasitic?
Remora fish swimming under sharks
Bees transporting pollen from flowers
Tapeworm in an intestinal tract of an animal
Birds eating the insects from the back of a hippopotamus
Which statement describes commensalism?
A relationship where one species benefits and the other is not affected.
A relationship where both species benefit.
A relationship where one species benefits and the other is harmed
A competition for the same food source.
The tree frog uses plants or trees for protection from the rain. The frog is protected from the rain and the tree is neither helped nor harmed. What form of symbiosis is represented in this relationship?
Mutualism
Predation
Commensalism
Parasitism
Lions stalk and prey on zebras for food. What type of relationship is this?
Predation
Mutualism
Parasitism
Commensalism
The movement of water between the oceans, atmosphere, land, and living things is called the
Nitrogen cycle
Phosphorus cycle
Water cycle
Carbon cycle
Besides evaporation from bodies of water, what other processes turn liquid water into water vapor?
Percolation and Respiration
Transpiration and Respiration
Percolation and Transpiration
Transpiration and Condensation
All of the following contribute to added carbon in the atmosphere EXCEPT
Combustion
Respiration
Decomposition
Consumption
All of the following are fossil fuels EXCEPT
Wood
Gas
Oil
Coal
The movement of Nitrogen between the environment and living this is called the
Water cycle
Nitrogen cycle
Carbon cycle
Phosphorus cycle
Variations in the gene pool of a species is which type of biodiversity?
Genetic diversity
Species diversity
Population diversity
Ecosystem diversity
Why are Non-Native Invasive species a threat to ecosystems?
They provide extra resources for native species
They add to the food chain
They have no natural predators and create competition with native species
They cannot survive successfully in their new environment
What is the main cause of acid rain?
Burning of fossil fuels
Emission of methane from cows
Release of nitrogen from fertilizers into water sources
Camp fires
Which of the following does NOT cause land pollution?
Landfills
Nuclear waste
Burning fossil fuels
Pesticides
How do greenhouse gases such as, water vapor and carbon dioxide contribute to global warming?
They get trapped in the atmosphere and cause the sun to get warmer
They go into the atmosphere and trap heat on Earth
They go into the soil and cause the geosphere to warm
They go into the hydrosphere and cause the oceans to warm
What is the main cause of ozone depletion?
Excess carbon dioxide in the atmosphere
Burning of fossil fuels
Excess CFCs in the atmosphere
Excess Nitrogen in the atmosphere
Air pollution is pollution of the .
Hydrosphere
Atmosphere
Geosphere
Lithosphere
What is one piece of evidence for global warming?
Endangered species
Ocean levels rising
Habitat loss for many organisms
Acidic bodies of water causing fish and plants to die
