pH and Ocean Acid.
What range of pH is considered acidic? Give the numbers
0-6
What is the variable that is manipulated by an experiment?
Independent Variable
What is the % of nitrogen that makes up our atmosphere?
70-80%
78%
The process that plants use to make glucose using water, sunlight and carbon dioxide.
photosynthesis
Ability of water molecules to stick to other substances
Adhesion
What gas is primarily responsible for the acidification of the ocean?
carbon dioxide
What type of variable is kept constant and unchanged throughout the experiment?
Control or constant variable
Nitrate or Ammonium
Plants need these three things to make their food
Carbon Dioxide, water and sunlight
What is the name of the bond that holds water molecules together? *hint - hug
Hydrogen bonds
Name 3 organisms that are vulnerable to changes in ocean pH due to acidification.
Sea urchins, sea snails, coral reefs, fish, sea otters, etc. (really anything in the ocean)
What is the term for the variable that is measured or observed in response to changed to the independent variable?
Dependent Variable
Name the process by which nitrogen gas is converted into ammonium
Nitrogen Fixation
What process involves the release of fossil fuels when they are burned for energy?
Combustion
What term describes a species that has an extremely large impact on its ecosystem? This species controls the populations of other species in the ecosystem
Keystone species
Name 2 keystone species we have talked about in class
Otters, Wolves, Beavers, etc.
I want to test how different amounts of sunlight affect plant growth. I use 4 of the same plant and put each one in the sun for a different amount of time (4 hours, 6 hours, 8 hours, and one sitting in a windowsill getting typical sun amounts), and record the height of the plans after 3 months.
Identify the IV, DV, constants, and control
IV: amount of time in sun
DV: height of plants
Constants: type of plant, soil and quality, pot size, amount of water/watering schedule, temperature, etc,
Control: the plant left in the windowsill that gets normal hours according to the sun cycle
What type of bacteria are primarily responsible for converting nitrogen gas into a form that plants can use?
Nitrogen fixing bacteria
Which is not a storage for carbon?
A. Atmosphere
B. Oceans
C. Trees
D. Nitrogen fixing bacteria
D
List two biotic factors AND two abiotic factors. make sure you label which is which
Biotic (living): animals, plants, humans, etc.
Abiotic (non-living): rocks, soil, air, water, temperature, etc.
What is the name of the material/ions/chemical that marine organisms use to build their shells?
Calcium carbonate, carbonate ions, etc.
Come up with a testable experiment. Provide a testable question, IV, DV, constants, and control
varies
What is the term for the process by which nitrates are converted back into atmosphere nitrogen gas?
Dentrification
Carbon Dioxide and Oxygen must be exchanged and cycled because
Without this cycle producers and consumers could not get their energy and continue living
Match the definition to the term
Passive movement of SOLUTES across a semipermeable membrane down the concentration gradient:_______________
Passive movement of WATER across a semipermeable membrane: ________
Passive movement of SOLUTES through a PROTEIN CHANNEL using the concentration gradient (high concentration to low concentration): ___________
Diffusion
Osmosis
Facilitated Diffusion