Vocabulary
Friction
Newton's Laws of Motion
Energy
Hodge Podge
100
an objects resistance to a change in motion
What is inertia
100
What is friction?
a force that pulls when two objects touch
100
This law is also called the law of intertia
What is Newton's first law of motion
100
The energy stored by an object as a result of its position
What is potential energy
100
The interaction between air molecules and a bird flying through the air is an example of what type of friction?
What is air resistance
200
the boundry between 2 objects or materials
What is surface
200
Friction is caused by the __________ of objects, liquids or gases to slide past each other.
What is resistance
200
For every action there is an equal and opposite reaction
What is Newton's third law of motion
200
the ability to do work is called __________
What is energy
200
The strength of a force of friction depends on how hard the surfaces push together and what type of ___________it is.
What is surface
300
a push or pull that is applied to an object
What is a force
300
Why do airplanes have wings that angle slightly back rather than straight out?
What is to decrease the friction between the plane and the air (air friction)
300
F = M x A
What is Newton's second law of motion
300
The energy that matter has because of its motion and mass
What is kinetic energy
300
The force needed to change the motion of an object sliding on a surface is (less than/greater than) that of an object rolling over a surface.
What is greater than
400
energy in the form of heat
What is thermal energy
400
____________ decrease friction by reducing the amount of contact between surfaces. Ex: oils
What is lubricants
400
An object in motion will stay in motion, in a constant speed and in a straight line, unless another force acts upon it.
What is Newton's first law of motion
400
friction converts kinetic energy into this
What is heat energy
400
If I am a sprinter in track I probably want a (high/low) amount of friction and I would wear _______ to make that happen.
What is high; track spikes
500
friction like force that opposes motion of objects (depends on speed, size, and shape of object)
What is resistance
500
A walking surface with a high amount of friction is ____________
What is answers will vary
500
How does increasing/decreasing mass affect friction?
What is increase mass = increase in force of friction decrease mass = decrease in force of friction
500
energy can either be ________ or ___________
What is potential or kinetic
500
Name a lubricant and give a situation where it might be useful.
What is answers will vary
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