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32 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Four steps of the scientific method |
Problem Hypothesis Test Conclusion |
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Founder of scientific method |
Galileo and Francis |
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Theory |
Tested Explains (because) |
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Control group |
Not what you're testing |
Sugar pill |
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Experimental group |
Has what you're testing |
Group with actual medicine |
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Distance |
Amount of space between two things or people |
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Mass |
Body of matter with no definite shape |
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Volume |
The amount of space that a substance or object occupies, that is enclosed within a container H×L×W |
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Density |
The amount of matter in a certain space How close the particles are Mass÷volume |
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Equilibrium |
Opposite forces that are balanced Sum of forces Net force=0 |
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Force |
A push or a pull |
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Unit of force |
Newton (N) |
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How much is a Newton? |
About 1/4 pound |
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Static equilibrium |
Not moving |
Static |
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What two forces act in static equilibrium |
Weight and support force |
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Dynamic equilibrium |
Moving |
Dynamic |
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Four forces acting on dynamic equilibrium |
Up/down (support force/weight) Left/right (thrust/drag or air resistance) |
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Tension |
Support force for a suspended (hanging) object |
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How does angle affect tension? |
Greater angle gives more tension |
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Newton's first law |
Law of inertia |
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Law of inertia |
Object in motion stays in motion |
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Newton's second law |
Unbalanced forced on an object cause it to move or accelerate |
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Equation for Newton's second law |
Acceleration=Net force Mass |
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Friction occurs in |
Liquids, gasses, solids |
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Fluids are... |
Liquids and gasses |
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Air resistance |
Friction when moving through air |
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Unit of pressure |
Pascal |
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Terminal velocity |
Terminal speed with direction of motion |
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Terminal speed |
Speed at which acceleration of a falling object is zero bc friction balances weight |
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Equation to find pressure |
Pressure= Force Area of application |
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Newton's third law |
For every action there is an equal and opposite reaction
When you push on something it pushes back |
I push on the wall. The wall pushes back |
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How to write Newton's third law |
Action- object a exerts force on object b Reaction- object b exerts force on object a |
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