WorksheetsENVIRONMENTAL SCIENCE MID-TERM EXAM
Total questions: 36
Worksheet time: 1hrs 10mins
Which of the following is the correct equation for PHOTOSYNTHESIS?
CO2 + light + H2O --> O2 + Sugar
CO2 + sugar + H2O --> O2 + light
CO2 + light + H2O --> CO2 + Sugar
CO2 + O2 + H2O --> Light+ Sugar
What is one of the reactants of cellular respiration?
Energy
Glucose
Carbon dioxide
Water
Anaerobic respiration.....
doesn't require CO2
requires CO2
doesn't require oxygen
requires oxygen
Which organelle is responsible making food (Glucose) using sunlight?
Ribosomes
Nucleus
Chloroplast
Mitochondria
Read the statement below and answer if it is a positive or negative feedback loop?
As Earth warms, organic matter in soil is decomposed faster:
• More carbon dioxide is released
• Enhanced greenhouse effect occurs
• Earth warms further
Positive feedback loop
Negative feedback loop
Read the statement below and answer if it is a positive or negative feedback loop?
As Earth warms, upper layers of permafrost melt, producing waterlogged soil above frozen ground:
• Methane gas is released in an toxic environment
• Greenhouse effect is enhanced
• Earth warms, melting more permafrost
Positive feedback loop
Negative feedback loop
Read the statement below and answer if it is a positive or negative feedback loop?
· Warm ocean currents such as Gulf stream are disrupted by additional fresh water input into ocean
· Reduced transfer of energy to poles reduces temperature at high latitudes
· Ice sheets reform and icebergs retreat
· Warm currents are re-established
Positive feedback loop
Negative feedback loop
What happens if a population grows past its carrying capacity?
The population keeps growing
The population starts to die off
The entire species will go extinct
The carrying capacity just increases
The largest number of individuals that an environment can support long term is…
Carrying capacity
Emigration
Immigration
Population density
Which limiting factor would increase due to the number of individuals in a population?
Unusual weather
Natural disaster
Births
Disease
Increased industrialization will most likely
decrease available habitats
increase environmental carrying capacity
increase the stability of ecosystems
decrease global warming
Which human activity would most likely deplete nonrenewable resources?
use of natural enemies to eliminate insect pests
development of wildlife refuges
governmental restriction of industrial pollution
increased use of fossil fuels
What is the name of the scientist who proposed the theory of evolution?
Alfred Wegner
Charles Darwin
Watson & Crick
Richard Dawkins
Why is biodiversity so important?
It balances the ecosystem
It completes the food chain
Oxygen supply
Pest control
What is evolution?
A concept of natural selection
Survival of the fittest
Change over time
Speciation
Organization of life terms from smallest to largest
biome, ecosystem, community, population, organism
Population, Species, Community, Ecosystem, Biosphere
Species, population, community, ecosystem, biome
Organism, population, community, ecosystem, biome
Which of these listed below are not an abiotic factor?
Weather
Sand
Sunlight
Wood
Which of these are not a biotic factor?
Sand
Wood
Sunflower
Starfish
In what way have humans significantly contributed to the increased amounts of carbon dioxide in the atmosphere?
Cellular respiration (breathing)
Burning Fossil Fuels
Forest Fires
None of the above
True or False: Bacteria fix nitrogen from the atmosphere into a form plants can use
True
False
The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.
the Carbon Cycle
the Oxygen Cycle
the Carbon dioxide Cycle
the Water Cycle
Sustainability is making sure that the planet and its resources can continue to provide life.
True
False
the pathway of energy transfer through various stages as a result of feeding patterns of a series of organisms.
Phosphorous Cycle
Nitrogen Cycle
Food Web
Food Chain
the process in which nitrogen circulates among the air, soil, water, plants, and animals in an ecosystem.
Nitrogen Fixing Bacteria
Nitrogen Cycle
Phosphorous Cycle
Carbon Cycle
the cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back to the environment.
Nitrogen Cycle
Nitrogen Fixing Bacteria
Phosphorous Cycle
Carbon Cycle
The environment contains...
Living things only
Nonliving things only
Both living and nonliving things
Only artificial things
Which steps are usually near the beginning of a scientific investigation?
hypothesizing and theorizing
observing and questioning
predicting and modeling
gathering and interpreting data
Tigers living in warm climates have thinner coats of fur than tigers living in cool climates. This is a result of
genetic diversity
species diversity
ecosystem diversity
general divesity
Which sphere are humans a part of?
geosphere
biosphere
hydrosphere
atmosphere
Which of Earth’s spheres consists of the layers of gases surrounding our planet?
geosphere
biosphere
atmosphere
hydrosphere
Name/Course/Class Schedule
