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A ____ is an example of a compound machine.
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
___________ is a moving inclined plane.
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
A solution with a pH of 13 is a ____.
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
All of these are simple machines EXCEPT .
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
The _________ is an example of a physical change.
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
How do Newton’s laws help scientists understand more about the physical world?
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
Which of the following is an example of a chemical change?
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
What is one way in which simple machines make work easier?
all answers are physical changes
Bicycle
burning
strong base
escalator
decreasing the amount of force necessary to complete a task
Scientists use these laws to make predictions about the motion of objects.
lawnmower
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