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20 questions
What can affect the rate of a chemical change?
temperature
thermometer
_________ is the force of attraction between any two objects.
resistance
gravity
_____________ a push or pull that acts on an object.
force
friction
__________________ the force that results when two materials rub against each other.
friction
gravity
Their speed and direction are not changing.
uniform motion
direction
inertia
acceleration
The rate at which the speed or the direction of motion of an object changes over time.
speed
acceleration
inertia
location
What are three ways that an object can accelerate?
to stop
speed up
slow down
change direction
______________ the tendency of an object to resist any change in motion.
_____ is a substance that has a definite shape and volume.
________ is a substance that has definite volume but no definite shape.
Compound
element
Melting
Sublimation
A _______________ can pull metal objects containing iron without touching them.
MAGNETS
GRAVITY
Smooth surface cause ____________ friction.
LESS
MORE
Forces that work together and make no change in motion are called ______________.
BALANCED
UNBALANCED
________________ forces cause the rope in tug-of-war to move in a certain direction.
UNBALANCED
BALANCED
A _______________ can pull metal objects containing iron without touching them.
MAGNETS
GRAVITY
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