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Science

Deffinitions

TermDefinition
Cell Membrane Gives structure and shape to the cell and is selectively permeable
Cell Wall Provides strength and support for plant cells
Chloroplast Site of photosynthesis
Cytoplasm Jelly-like fluid that holds the organelles in place
Chromatin Stores the genetic information
Endoplasmic Retuculum A network of tubes responsible for transporting material from one part of the cell to another
Golgi Apparatur Packages proteins for distribution to other parts of the cell
Golgi Vesicle A sac that comes off the Golgi Apparatur
Lysosomes Contain digestive enzymes
Mitochondria Referred to as the "powerhouse" of the cell because it produces energy.
Nucleolus Site where RNA is made
Nucleus Contains the genetic material of the cell. It is often referred to as the "brain" of the cell
Ribsosome These organelles help with the making of proteins
Vacuoles Storage location for food, water and wastes
Luminous Object Objects that produce their own light
Transparent Material A material that allows light to pass through it
Pigment A material that gives paints and crayons their colour
Triboluminescence The production of light from friction as a result of scratching, crushing or rubbing certain crystals togeather
Fluorescence The immediate emission of visible light as a result of the absorption of ultraviolet light
Bioluminescence The production of light in living organisms
LED Light Light produced by a semiconductor
Incandescence The production of light as a result of high temperatures
Electromagnetic Spectrum The full range of frequencies, from radio waves to gamma waves
Opaque Materials Materials that do not allow light to ass thorough them
Translucent Materials Materials that allow some light to pass through them, while some light is scattered
Chemiluminescence The production of light as a result of a chemical reaction with little or no heat produced
Hyperopia Far sighted, it is when the light enteres your eye where the light meets where the image is formed. it is formed after your retna
Myopia near sighted when light enters your eye where the light meets is where the image is formed. The image s formed before your retina.
Proxy Records Ice cores and tree rings that give an indication of past climate
Thermal expansion The property of water to increase in volume as a result of temperature increase
Energy Balance When the energy (solar radiation) coming in to the earth is equal to the energy going out.
Anthropogenic Carbon Dioxide Comes from the burning of fossil fuels
Carbon Footprint The amount of greenhouse gas emissions by a person or a technology
Nitrous Oxide A greenhouse gas that's 300 times more powerful than carbon dioxide (CO2)
Methane A greenhouse gas produced in the agricultural industry by livestock
Carbon Sink Something that is able to store carbon
Carbon Dioxide A greenhouse gas that is absorbed by plants during photosynthesis
Climate Zone An area with a specific kind of climate
Ice cores Give an idea of the kinds of gases trapped in the air
Heat sink Something that is able to store heat
Created by: RossB
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