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Year 7 Revision
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what type of weathering is caused by wind or water breaking apart rock?
physical weathering
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what type of energy is stored in food?
chemical potential
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what piece of equipment do you use to hold larger amounts of solids or liquids?
beaker
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which organism is the producer?
grass
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what are the units for measuring mass?
kilograms, grams
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Name three herbivores in this food web?
kangaroo, wombat, honey eater, termites, cricket, emu
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plants use photosynthesis to make
sugar and oxygen / their own food
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changes of state: Liquid to a gas
evaporation
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When lighting the Bunsen burner, is the air hole closed or open?
closed
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What is the process called where rocks break down into smaller pieces
Weathering
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In an element, how many types of atoms are there
An element is a pure substance made of ONE type of atom-
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List four types of energy
chemical, potential, kinetic, electrical, heat
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the variables that are kept constant in an experiment are called?
control variables
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which variable is one the you change?
independent variable
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rocks are made of one or more different _______________________
minerals
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what process breaks down rock into smaller fragments?
weathering
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In a food chain bacteria and fungi break down dead organisms. They are called?
decomposers
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T/F most metals are shiny and can conduct electricity
True
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What type of weathering is caused by weak acid in rain?
chemical weathering
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Name the change of state labelled C
solidification
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What is the difference between lava and magma
lava is above ground, magma is below the surface of the earth
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Changes of state: solid to a liquid
melting
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what type of energy goes a campfire give off?
heat light and sound
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what type of energy is seen here
light energy
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changes of state: Liquid to a solid
solidification
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Name the change of state A
melting
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describe an adaptation of an Australian plant (try Ironbark tree)
thick bark, thin long leaves, silvery coloured leaves, dropping branches, flowers.
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T/F particles in matter vibrate faster when heated
true
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malleable means
bendy
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Name the cycle that shows how rocks change over time.
the rock cycle
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Name a secondary consumer in this food web
echidna, magpie,lizard
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Name the piece of equipment for observing small amounts of liquid
test tube
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A carnivore is an animal that only eats
meat
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Primary consumers eat ............................
plants or producers
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which variable is the one you measure as the result?
dependent variable
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what is the name of the cycle that describes how rocks change into other types of rocks?
the rock cycle
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Name three uses of rocks
energy (coal), building materials (iron, concrete), jewellery, bench tops, decorating (statues), tools
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Name a primary consumer in this food web
wombat, honey eater, termites, kangaroo, cricket
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In a food web, organisms that can make their own food are called___________
producers
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what type of weathering is caused by wind or water breaking apart rock?
physical weathering
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what part of the scientific report is states the purpose of the experiment?
aim
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what type of rock is formed from cooling lava or magma?
igneous
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Describe an adaptation of the wombat
long claws, rear facing pouch, thick brown fur, square bottom, nocturnal
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how many variables are changed in a valid (fair) science experiment?
ONE
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