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25
×
what helps prevent the flooding of roads during heavy rainstorms?
seismograph
groin
storm drain
sea wall
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seesaw
Swap points!
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rocket
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gift
Win 25 points!
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baam
Lose 15 points!
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25
×
how can you control erosion at the beach?
storm drains
beach nourishment
levees
groins
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25
×
What causes a liquid to change to a gas
an increase in temperature
a decrease in temperature
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25
×
why are electric cords coated with plastic?
because plastic is flexible
because plastic blocks the flow of electric current
because plastic allows electric current to flow
because plastic is cheap
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boom
Lose 50 points!
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seesaw
Swap points!
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gift
Win 15 points!
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thief
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25
20
×
A measure of the amount of matter in an object
Mass
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20
×
A form of matter that has a definite shape and volume
Solid
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25
×
Hill of sand deposited by wind
dune
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25
×
support microorganisms are harmful
microorganisms live in soil, water, air
mosquitoes can transmit protozoa that cause malaria
algae release oxygen into the air as waste
bacteria and fungi are decomposers
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25
×
what part of a cell controls what enters and exits the cell?
nucleus
cytoplasm
chlorophyll
cell membrane
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20
×
A state of matter with no definite shape or volume
Gas
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lifesaver
Give 10 points!
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star
Double points!
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rocket
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thief
Give points!
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25
25
×
which is not true?
a plant cell cannot be seen without a microscope
the cell membrane of animal cells is thicker than plant cell
an animal cell cannot be seen without a microscope
animal and plant cells have organelles
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25
×
why are electric cords coated with plastic?
because plastic blocks the flow of electric current
because plastic allows electric current to flow
because plastic is flexible
because plastic is cheap
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25
×
which is a wolf's instinct?
playing with other wolves
barking
hiding in a den
following its mother
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