Motion
Speed
Energy
Work
Simple Machines
100
A push or pull exerted on an object
What is force
100
The rate of change of an object's position
What is speed
100
Thermal energy is measured in
What is joules
100
The unit of power is the ______
What is watt
100
A slanted surface used to raise an object is an ______
What is inclined plane
200
the tendency of an object to resist change in its motion
What is inertia
200
any change over time
What is rate
200
The ____ energy of an object increases with its height
What is potential
200
Thermal energy is measured in_____
What is joules
200
A bar that is free to pivot about a fixed point is called a ____
What is lever
300
the amount of matter in an object
What is mass
300
unequal forces pushing in opposite directions
What is unbalanced forces
300
The kinetic energy of an object increases as its ____ increases.
What is velocity
300
Two inclined planes put together form a simple machine called a ______
What is wedge
400
The net force acting on an object is zero
What is balanced force
400
An object that is neither speeding up nor slowing down travels at a ______.
What is constant speed
400
____ can cause kinetic energy to change into thermal energy
What is friction
400
A device that does work with only one movement and changes the size or direction of a force is a _____
What is simple machine
400
An inclined plane wrapped around a cylindrical post is called a ______
What is screw
500
The speed of an object and the direction of its motion
What is velocity
500
rate of change of the velocity of an object
What is acceleration
500
Green plants convert light energy from the sun into _____.
What is chemical potential energy
500
The amount a machine multiplies an effort force is called the ________
What is mechanical advantage
500
What are 2 or more simple machines that work together called?
What is compound machine
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