Describing and Measuring Motion
Slow Motion on Planet Earth
Acceleration
The Nature of Forces
Friction & Gravity
100
is when the distance from another object is changing
What is motion?
100
The outer layer of the earth is broken up into a dozen major pieces
What are plates?
100
the rate at which velocity changes, refers to speeding up, slowing down, and changing direction
What is acceleration?
100
is a push or a pull
What is a force?
100
the two factors that control/determine the strength of gravity
What are mass and distance?
200
is a place or object used for comparison to determine if something is in motion
What is a reference point?
200
states that Earth's plates move slowly in various directions.
What is the Theory of Plate Tectonics?
200
slowing down is a type of negative acceleration, also called
What is deceleration?
200
the SI unit which the strength of force is measured in
What is the Newton (N)?
200
the force of gravity acting on an object at the surface of a planet
What is weight?
300
the system of measurement that scientists use all over the world to communicate clearly
What is the International System of Units (SI)?
300
signs of plate movement (give one)
What are earthquakes, fault lines, or mountains?
300
the acceleration equation
What is acceleration = (final speed - initial speed)/time?
300
the combination of all forces acting on an object
What is Net Force?
300
The force that two surfaces exert on each other when they rub against each other
What is friction?
400
the distance an object travels per unit of time
What is speed?
400
scientist use the speed of the plate movement and the direction of its motion to help them make these
What is make future predictions?
400
the types of graphs used to represent acceleration
What are d vs t and v vs t?
400
the type of forces acting on an object that result in a net force and a change in the object's motion
What are Unbalanced Forces?
400
the force that pulls object's towards each other and acts between all objects in the universe
What is gravity?
500
both the speed and direction of an object's motion
What is velocity?
500
if one of Earth's plates moves at a speed of 5 cm/month for a year, the distance it would travel is...
What is 60 cm?
500
the moon is accelerating in its orbit around Earth even though it is traveling at a constant speed because it is always doing this
What is changing direction?
500
the forces acting on an object that result in no net force and no change in the object's motion
What are Balanced Forces?
500
the four types of friction
What are static, sliding, rolling, and fluid friction?
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