Unit 5
Describes any non-living factor of an ecosystem, such as temperature, water, or air.
What is abiotic?
Water falling from the sky to land on the Earth's surface.
What is precipitation?
Water stored in permeable rock underground.
What is an aquifer?
The dose of a toxin that kills 50% of the test group that is exposed to it.
What is the LD50?
The time it takes a planet, such as the Earth, to fully orbit around the Sun.
What is period of revolution?
The number of different types of organisms living in an ecosystem.
What is species biodiversity?
What is a river/drainage basin/watershed?
A resource or environmental condition that restricts the growth of a population within an ecosystem.
What is a limiting factor?
Exposure that happens once or infrequently.
The point around which two or more celestial bodies orbit in space.
What is a barycenter?
A diagram that shows all possible paths for energy to travel through in an ecosystem.
What is a food web?
Name two of the six major properties of water.
Adhesion, Cohesion, Surface tension, Polarity, Capillary action, Universal solvent
The process by which an ecosystem returns to normal after an event that leaves the soil behind.
What is secondary succession?
The amount of change in a population without considering immigration or emigration.
What is the rate of natural increase?
An event that occurs when the Sun, Earth, and Moon align such that the Earth casts a shadow on the moon.
What is a lunar eclipse?
An increase in the concentration of a substance in an individual organism over time.
What is bioaccumulation?
Movement of water from the surface into the soil.
What is infiltration?
Name one of the three mortality indicators.
Death Rate
Infant Mortality Rate
Life Expectancy
What is the tragedy of the commons?
The source of the Sun's energy.
What is nuclear fusion?
Organisms that can produce their own energy.
What is an autotroph or (primary) producer?
What is specific heat capacity?
CHALLENGE ROUND
9.8 m/s2
What is the Earth's gravity?
What is selective cutting?
A change in the color of a celestial body indicating that it is moving towards the observer.
What is blueshift?