Hamilton MS Science Gr 7 Energy Flow 2013
The ability to do work or to cause change.
|radiant (light) energy|| |
light; energy transmitted in wave motion from the sun
|chemical energy|| |
The potential energy stored in chemical compounds.
|thermal energy|| |
kinetic energy the movement of atoms and molecules which causes heat to be given off. Heat is thermal energy in transfer.
Process by which plants use the sun's energy to convert water and carbon dioxide into glucose (sugar) and oxygen.
the amount of living matter in a given habitat; organic matter, especially plant matter, that can be converted to fuel and is therefore regarded as a potential energy source.
to decompose, rot or breakdown.
an organism that obtains energy by feeding on other organisms.
an organism that breaks down large molecules from dead organisms into small molecules and returns important materials to the environment.
something living like a plant, animal, bacteria, protest or fungus. It is made up of organs, organelles or other parts that work together to carry out a function.
an animal that eats only other animals to obtain energy.
an animal that eats only plants to obtain energy.
an animal that eats both plants and animals to obtain energy.
an organism that can make its own food
|food chain|| |
a series of events in which one organism eats another and obtains energy.
|food web|| |
the pattern of overlapping food chains in an ecosystem.
|energy pyramid|| |
a diagram that shows the amount of energy that moves from one feeding level to another in a food web.
|energy flow|| |
the flow or transfer of energy through a biological food chain.
all the living and nonliving things that interact in an area.
anything that has mass and volume. Exists in four states-solid, liquid, gas and plasma.
processing used materials (waste) into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, and to reduce energy
a structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food.
|energy transfer|| |
the transfer of energy from one body to another.
|trophic level|| |
A position in a food chain or Ecological Pyramid occupied by a group of organisms with similar feeding mode. Refers to food or feeding levels.
|biomass pyramid|| |
A graphical representation to show the relative amounts of biomass at each trophic level. Biomass pyramids are shaped that way to show that biomass is largest at the base, and decreasing in amount as it goes through the top.
the first in order Ex: Primary consumers are the first consumers of the producers
the second in order. Ex: Secondary Consumers eat the primary consumers.
the third in order. Ex: Tertiary consumers eat the secondary consumers.
how energy or work is measured in science (1 calorie for a human = about 4 Joules)
units of heat that measure the energy used by the body and the energy that foods supply to the body
|solar energy|| |
energy from the sun in the form of solar radiation.