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Science Vocabs
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    Science Glossary and Index
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  • rain that contains dissolved nitric oxides or sulfur dioxide
    acid rain
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  • the force caused by air pushing against moving objects
    air resistance
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  • the unit used to measure electric current
    ampere
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  • an allergic reaction that causes a person to have difficulty breathing
    asthma
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  • the mixture of gases surrounding the Earth
    atmosphere
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  • when two forces acting on an object are equal and opposite
    balanced (forces)
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  • special tubes that carry the blood
    blood vessels
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  • the organ that controls all body functions
    brain
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  • the way we take air into our bodies and let it out of our bodies
    breathing
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  • the pumping of blood all around the body
    circulation
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  • the system formed by the heart, blood vessels and blood
    circulatory system
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  • rotted vegetables and garden waste that is used as fertilizer
    compost
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  • to keep safe, to protect from extinction
    conserve
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  • a living thing (usually an animal) that eats another plant or animal
    consumer
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  • removal of trees by humans
    deforestation
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  • regions with very little rainfall
    desert
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  • a way to remove wastes from the blood with a machine if the kidneys do not work properly
    dialysis
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  • the process of breaking down food into very tiny particles
    digestion
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  • when a substance, often a solid, mixes with a liquid and becomes part of the liquid
    dissolve
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  • our natural surroundings
    environment
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  • the process of removing of waste products from the body
    excretion
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  • a method to separate mixtures made of a solid and liquid using a filter
    filtering / filtration
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  • a way to describe the feeding relationship between plants and animals
    food chain
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  • a force which tries to stop things sliding past one another
    friction
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  • the gradual increase in temperatures throughout the world
    global warming
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  • the force that pulls objects towards the Earth
    gravity
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  • a special muscle that pumps blood around the body
    heart
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  • cannot dissolve
    insoluble
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  • cannot be changed back to what it was before
    irreversible
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  • the organ which breaks down food into tiny particles that can move into the blood; undigested food is pushed out at the end of it
    intestines
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  • bean-shaped organs that filter blood to remove wast products
    kidneys
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  • measure of mass equal to 1000g
    kilogram
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  • where waste products from a town or city are disposes of or buried
    landfill (site)
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  • the organs we use for breathing
    lungs
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  • the amount of matter in an object, measured in kilograms
    mass
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  • forms by when two or more substances mixed together but are not chemically joined
    mixture
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  • the brain and nerves
    nervous system
  •  5
  • the unit used to measure weight
    newton
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  • a part inside the body that carries out a specific function to keep us alive
    organ
  •  5
  • different organs that work together to carry out a certain function in the body
    (organ) system
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  • substances that cause pollution
    pollutants
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  • making the environment dirty with waste products
    pollution
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  • a consumer that eats other animals (which are their prey)
    predador
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  • the force that is put on something
    pressure
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  • an animal that is eaten by another animal (a predador)
    prey
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  • a plant that produces energy from sunlight
    producer
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  • how fast something happens
    rate
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  • when substances are mixed together and change chemically to form a new substance
    react (reaction)
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  • to re-process something and make into a new product
    recycling
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  • a store of something necessary for life, such as water, energy and minerals
    resource
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  • can be changed back to what it was before
    reversible
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  • liquid produced in the mouth
    saliva
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  • a material or piece of equipment with holes in it that will only allow substances of a certain size to go through the holes
    sieve
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  • can dissolve
    soluble
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  • the material that is dissolved
    solute
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  • a mixture of one substance in another, where the dissolved substance can no longer be seen
    solution
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  • the liquid in which a solute dissolves
    solvent
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  • a particular type of living organism
    species
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  • the organ which mixes chewed food with digestive juices to form a thick liquid
    stomach
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  • a cloudy mixture of insoluble solid particles in a liquid
    suspension
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  • a growth on body organs (disease)
    tumour
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  • the liquid waste excreted by the kidneys
    urine
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  • the amount of force that pulls objects towards the Earth
    weight
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  • the tube that carries air from the nose and mouth to the lugs and back again
    windpipe (trachea)
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  • the size of the outside part of an object
    surface (area)
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