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Matter, Materials and Forces
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amount of matter in an object
mass
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opposite of fragile
flexible
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when two objects interact but don't make contact or touch each other
non-contact force
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A ball of cork ________ because it has a __________ density than water.
floats/lower
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The steel ball has more/less density than the cork ball.
more
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property description: can support weight without breaking
strong
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when objects touch and exert force on each other
contact force
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opposite of rigid
elastic
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property description: returns to original shape after stretching
elastic
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instrument used to measure volume
cylinders and beakers
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force exerted by magnets
magnetism
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unit(s) of mass
grams (g) and kilograms (kg)
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amount of mass in a specific volume
density
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anything with mass and volume
matter
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Wood and metal are examples of __________ materials.
natural
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Plastic, ceramics, and glass are examples of ___________ materials.
man-made
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opposite of opaque
transparent
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matter with particular characteristics
material/substance
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The steel ball has more/less mass than the cork ball.
more
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opposite of weak
strong
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instrument used to measure mass
scales
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differentiates one material from another
properties
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opposite of soft
hard
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property description: light can pass through
transparent
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have a fixed volume only
liquid
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has neither a fixed shape nor a fixed volume
gas
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property description: can be bent without breaking
flexible
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property description: cannot be scratched easily
hard
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An anchor _______ because it has a _________ density than water.
sinks/higher
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Fibres are an example of ___________ materials.
natural and man-made
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A feather ________ because it has a __________ density than water.
floats/lower
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A stone _________ because it has a ___________ density than water.
sinks/higher
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Objects ability to float in liquid
buoyancy
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force that pulls objects toward the Earth
gravity
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The balls have the same/different volumes.
same
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have a fixed shape and volume
solid
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amount of space an object occupies
volume
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can change an object's movement or direction of movement.
forces
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unit(s) of volume
milliliters (ml) and liters (L)
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