Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Grade 7: Q4, Seq 3
Matter & Energy in Ecosystems
| Term | Definition |
|---|---|
| ecosystem | the living organisms in an area and the non-living (abiotic) aspects of the environment |
| scientific model | a representation or description designed to make a particular part/feature of the world easier to understand |
| feeding level | the position an organism occupies on a food web |
| energy | the ability to do work or cause change |
| Law of Conservation of Energy | energy cannot be created or destroyed, only transformed from one form into another |
| Law of Conservation of Mass | mass is neither created nor destroyed in ordinary chemical and physical changes |
| scientific theory | explains why something happens |
| scientific law | explains what will happen |
| autotroph | organisms that produce their own food |
| heterotroph | organisms that get energy by eating other organisms |
| producer | an organism that transforms energy from the Sun and uses carbon dioxide and water to make food |
| consumer | an organism that must consume other organisms for nutrients |
| primary consumer | an organism that gets its energy by feeding on producers in the food chain |
| secondary consumer | an animal that eats primary consumers |
| tertiary consumer | an organism that gets its energy by eating secondary consumers |
| food chain | a single, linear path showing the flow of energy from the Sun to a producer and through different levels of consumers |
| food web | overlapping food chains with different pathways to show the flow of energy in an ecosystem |
| decomposer | organisms such as bacteria and fungi that break down the remains of dead plants and animals without the need for internal digestion |
| matter | anything that takes up space and has mass |
| mass | amount of matter something has |
| geosphere | Earth's rock, minerals, ground |
| biosphere | living or once-living things on Earth |
| hydrosphere | liquid water on Earth |
| cryosphere | frozen water on Earth |
| atmosphere | air/gas above the surface of Earth) |
| precipitation | rain or snow in the water cycle |
| condensation | water turning from a gas in the air to liquid when it comes in contact with a cool surface |
| evaporation | conversion of water from a liquid to a gas, contributing to the movement of water from Earth's surface to the atmosphere |
| infiltration | water moving into the ground from ground or rainwater |
| photosynthesis | a chemical reaction during which plants convert radiant energy from the Sun to chemical energy; the reaction converts carbon dioxide and water into sugar (glucose) and oxygen |
| carbon dioxide | a gas released during cellular respiration; used by plants during photosynthesis |
| cellular respiration | the process of obtaining energy from the breaking of chemical bonds in nutrients |
| glucose | sugar (produced during photosynthesis) |
| byproduct | an additional product of a process |
| oxygen | a gas released by plants during photosynthesis; used during cellular respiration |
| independent variable | the one thing a scientist manipulates or tests on purpose during an experiment |
| dependent variable | the results that are measured/observed during an experiment |
| constants | factors during an experiment that are controlled so that they don't affect the dependent variable |
| empirical evidence | the cumulative body acquired of observation or experimentation in which scientific explanation is based |
| herbivore | an organism that consumes only plants |
| carnivore | an animal that eats other animals |
| omnivore | an organism that eats both plants and animals |
Created by:
user-1837680
Popular Ecology sets