Ch. 1 Vocab
A quantity that can have more than a single value.
Variable
A change in an object’s position relative to a reference point.
Motion
A possible explanation for a problem using what you know and what you observe.
Hypothesis
Standards are universally accepted and understood by scientists throughout the world.
SI
A car, a bicycle, a mouse, and a bug have the same velocity. Which has the greatest momentum?
Car
The amount of space occupied by an object.
Volume
The distance an object travels per unit of time.
Speed
The rate of change of velocity.
Acceleration
Example of a derived unit.
Two units multiplied together
Does a car accelerate if it moves at 80 km/h on a flat, straight highway.
No
Anything that takes up space and has mass.
Matter
The distance and direction of the object’s change in position.
Displacement
Anything that is thrown or shot through the air
Projectile
Standard of unit was used in the middle ages that was not a good standard.
King's arm
What else do you need to know about a hurricane other than speed to be able to warn people to evacuate?
Direction
A measurement of the quantity of matter in an object.
Mass
Includes the speed of an object and the direction of its motion.
Velocity
The total distance traveled divided by the total time of travel.
Average speed
It would not be a good idea to give what type of country a technological gift.
Developing country
What causes a car to accelerate if it is moving at a constant speed?
Change of direction
A factor that does not change.
Constant
The product of its mass and velocity.
Momentum
Relation between 2 amounts.
Ratio
Type of graph is most useful for showing how the relationship between the independent and dependent variables changes over time.
Line graph
If you walked 20 m, took a book from a table, and walked back to your seat, what are the distance you traveled and your displacement?
Distance 40 m and displacement 0 m